Homework 1

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Trusted Experts Our team of experts are drawn from group of academicians who hold doctorates in their chosen fields. They have been teachers all their lives.For each of the following situations, indicate whether it would be best modeled with a mathematical model or a statistical model.

homework 1

Explain your answers. For each of the following eight exercises, identify: a. Give examples where appropriate. A fitness center is interested in the mean amount of time a client exercises in the center each week.

Ski resorts are interested in the mean age that children take their first ski and snowboard lessons. They need this information to plan their ski classes optimally. A cardiologist is interested in the mean recovery period of her patients who have had heart attacks. Insurance companies are interested in the mean health costs each year of their clients, so that they can determine the costs of health insurance.

A politician is interested in the proportion of voters in his district who think he is doing a new good job. A marriage counselor is interested in the proportion of clients she counsels who stay married. Political pollsters may be interested in the proportion of people who will vote for a particular cause.

A marketing company is interested in the proportion of people who will buy a particular product. Use the following information to answer the next three exercises: A Lake Tahoe Community College instructor is interested in the mean number of days Lake Tahoe Community College math students are absent from class during a quarter. In this case, X is an example of which of the following? This value is an example of which of the following?

For the following exercises, identify the type of data that would be used to describe a response quantitative discrete, quantitative continuous, or qualitativeand give an example of the data.

Use the following information to answer the next two exercises: A study was done to determine the age, number of times per week, and the duration amount of time of resident use of a local park in San Jose.

The first house in the neighborhood around the park was selected randomly and then every 8th house in the neighborhood around the park was interviewed. Duration amount of time is what type of data? Airline companies are interested in the consistency of the number of babies on each flight, so that they have adequate safety equipment.

Suppose an airline conducts a survey. Over Thanksgiving weekend, it surveys six flights from Boston to Salt Lake City to determine the number of babies on the flights.

Double Homework - Episode 1

It determines the amount of safety equipment needed by the result of that study.Overview The first homework is to construct a set of SQL queries for analysing a dataset that will be provided to you. For this, you will look into IMDB data. This homework is an opportunity to: 1 learn basic and certain advanced SQL features, and 2 get familiar with using a full-featured DBMS, SQLitethat can be useful for you in the future. The homework contains 10 questions in total and is graded out of points.

It will likely take you approximately hours to complete the questions. Create the placeholder submission folder with the empty SQL files that you will use for each question:. The -j flag lets you compress all the SQL queries in the zip file without path information. The grading scripts will not work correctly unless you do this. Install the sqlite3 and libsqlite3-dev packages by running the following command.

homework 1

On Mac OS Leopard or later, you don't have to! It comes pre-installed. You can upgrade it, if you absolutely need to, with Homebrew. Check if sqlite3 is properly working by following this tutorial.

We have prepared a random sample of the original dataset for this assignment. Although this is not required to complete the assignment, the complete dataset is available by following the steps here. Get familiar with the schema structure of the tables what attributes do they contain, what are the primary and foreign keys. Run the. The output should look like the example below for each table. Contains details for a person. Contains details for a title.

The table contains the alternate titles for the dubbed movies. Contains the details of the cast of the title. For example, this is a row from the table: tt 5. Details: List all distinct types of titles ordered by type.

Details: Find the titles which are the longest by runtime minutes. There might be cases where there is a tie for the longest titles - in that case return all of them.

Display the types, primary titles and runtime minutes, and order it according to type ascending and use primary titles ascending as tie-breaker. Details: Print type and number of associated titles. For example, tvShort Sort by number of titles in ascending order. List the number of titles in every decade. Like s Details: Print all decades and the number of titles.

Print the relevant decade in a fancier format by constructing a string that looks like this: s. Sort the decades in decreasing order with respect to the number of titles. Remember to exclude titles which have not been premiered i. Display like : s For the total number of titles, count all titles including ones that have not been premiered.Homeworkor a homework assignmentis a set of tasks assigned to students by their teachers to be completed outside the class.

Common homework assignments may include required readinga writing or typing project, mathematical exercises to be completed, information to be reviewed before a testor other skills to be practiced. The effect of homework is debated. Generally speaking, homework does not improve academic performance among children and may improve academic skills among older students, especially lower-achieving students.

Homework also creates stress for students and their parents and reduces the amount of time that students could spend outdoors, exercising, playing, working, sleeping, or in other activities.

The basic objectives of assigning homework to students are the same as schooling in general: to increase the knowledge and improve the abilities and skills of the students, [1] to prepare them for upcoming or complex or difficult lessons, to extend what they know by having them apply it to new situations, or to integrate their abilities by applying different skills to a single task.

Homework also provides an opportunity for parents to participate in their children's education. Homework is designed to reinforce what students have already learned.

Teachers have many purposes for assigning homework including: [3]. Homework research dates back to the early s. However, no consensus exists on the general effectiveness on homework. Among teenagers, students who spend somewhat more time on homework generally have higher gradesand somewhat higher test scores than students who spend less time on homework.

Younger students who spend more time on homework generally have slightly worse, or the same academic performance, as those who spend less time on homework. Low-achieving students receive more benefit from doing homework than high-achieving students. In past centuries, homework was a cause of academic failure: when school attendance was optional, students would drop out of school entirely if they were unable to keep up with the homework. Proponents claim that assigning homework to young children helps them learn good study habits.

Essentially, they advocate for doing potentially unnecessary homework from approximately age five to ten as a way of practicing for doing necessary homework from age 10 to No research has ever been conducted to determine whether this claim has any merit. The amount of homework given does not necessarily affect students' attitudes towards homework and various other aspects of school.

Epstein found a near-zero correlation between the amount of homework and parents' reports on how well their elementary school students behaved. For all three of the correlations, higher values represent a higher correlation between time spent on homework and poor conduct. Bempechat says that homework develops students' motivation and study skills.

In a single study, parents and teachers of middle school students believed that homework improved students' study skills and personal responsibility skills. Homework has been identified in numerous studies and articles as a dominant or significant source of stress and anxiety for students. Students in the survey who were ridiculed or punished by parents and peers had a higher incidence of depression symptoms, with 2.

Stress was especially evident among high school students. Students that reported stress from homework were more likely to be deprived of sleep.

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Homework can cause tension and conflict in the home as well as at school, and can reduce students' family and leisure time. In the MetLife study, high school students reported spending more time completing homework than performing home tasks. However, Kiewra et al. The students slept an average of 6 hours 48 minutes, lower than the recommendations prescribed by various health agencies. A study done at the University of Michigan in concluded that the amount of homework given is increasing.Overview The first homework is to construct a set of SQL queries for analysing a dataset that will be provided to you.

For this question you will look into bike sharing data collected from five cities in the Bay Area. This homework is an opportunity to: 1 learn basic and certain advanced SQL features, and 2 get familiar with using a full-featured DBMS engine, SQLitethat can be useful for you in the future. The homework contains 10 questions in total and is graded out of points. It will likely take you approximately hours to complete the questions. We will also provide a compressed folder placeholder.

Baby Mario's Homework

You will need to fill in the SQL queries in these placeholder files. The -j flag lets you flatly compress all the SQL queries in the zip file without the path. Install the sqlite3 and libsqlite3-dev packages by running the following command.

On Mac OS Leopard or later, you don't have to! It comes pre-installed. You can upgrade it, if you absolutely need to, with Homebrew. Check if sqlite3 is properly working by following this tutorial. Download the database dump file :. Download the placeholder folder at here :. Get familiar with the schema structure of the tables what attributes do they contain, what are the primary and foreign keys, etc.

Run the. The output should look like this:.

homework 1

The following figure illustrates the schema of these tables:. For example, the tuple in trip table, " ", "Market at 4th", 76, " ", "Post at Kearney", 47, means that the bike had a trip from station 76 "Market at 4th" at to station 47 "Post at Kearney" at Its zip code is When calculating the duration of a bike trip, please use trip.

Please do NOT use trip. Details: Print the number of cities eliminating duplicates. Details: Print city name and number of stations. Sort by number of stations increasingand break ties by city name increasing.

A trip belongs to a city as long as its start station or end station is in the city. For example, if a trip started from station A in city P and ended in station B in city Q, then the trip belongs to both city P and city Q. If P equals to Q, the trip is only counted once.

Details: Print city name and ratio between the number of trips that belong to that city against the total number of trips a decimal betweenround to four decimal places using ROUND.

Sort by ratio decreasingand break ties by city name increasing. As above, either starting a trip or finishing a trip at a station, the trip is counted as one "visit" to that station.

The trip is only counted once if the start station and the end station are the same.N-G stands for a team not to score. Below everyday categories that interest you like. But there is no guarantee thateven with the best advice availableyou will become a successful punter because not everyone has what it takes to be a successful punter.

We can now offer you the dedicated site OLBG Russia. If you want to access OLBG Russia, please click on your flag below, or you can select the standard OLBG. Become a member and save your favorite odds format and many more. We call our most popular betting predictions our hot tips. They are on fire. If you are looking at the most popular betting tips during the day then the likelihood is that they will be largely made up of betting tips for horse racing.

Betting tips for this evening will normally be predominately football betting tips during the week. If you are looking for betting tips tonight you will see US sports betting is popular and we regularly see NBA betting tips rise to the top of the hot tipsters list.

The weekends betting tips of course cover a large range of sports, in all we cover over 18 sports at OLBG so you can find sports betting tips for all the major UK, European and World Wide sporting events.

Our Tennis betting tips and Golf Betting tips are the next most popular tips. We also provide free betting tips on Rugby League, Rugby Union, Cricket, American Football, Baseball, Basketball, Ice Hockey, Snooker, Motor Racing, Darts, Boxing, Esports, Volleyball, Handball and Greyhounds. Aside from these main categories we will also share betting tips for athletics around the popular events such as the Olympics. Winter Olympics tips will also be available for the 2018 Winter Olympics in South Korea.

We also have a designated section of the site for Cheltenham Tipsa seperate site for Grand National tips and will also have a dedicated area for World Cup 2018 betting tips.

Quite simply becuase we have the best tipsters. OLBG has been providing betting tips since 2002. These huge prize funds attract and retain the best sports betting tipsters around.A Parlay winning is calculated by multiplying the sum of the stake by each odd of each event. The participant can include in parlays any events that are not depending on each other. If at least one event is predicted incorrectly, the parlay is lost. TYPES OF OUTCOMESThe main variants of outcomes for betting1.

For the victory of a bet with such outcome the victory of the first team or a draw is necessary. To win a bet with such outcome it is necessary that one of the competitors win, the game should not end in a draw.

To win a bet with such outcome the second team must win or the game ends in a draw. Victory of the participant of competition taking into account the handicaps. Handicap can be positive, negative or zero. The handicaps given to the participant are added to the corresponding result shown by the participant in the competition. Payments are made with the winning coefficient mentioned in the program. If the result is in favour of the competitor, the bets are lost.

Double bet of handicap is offered (Asian handicap). Bet on victory or total taking into account the handicap, this is the multiple of 0. In case when the Asian handicap is included in parlay or system, it is calculated with that odd which would be in case of a single bet. If both common bets are lost, the whole bet considered lost.

In the line this quantity is called total for brevity. For winning it is necessary to guess, whether it will be scored more or less than total in the line, or exactly the specified quantity. At definition of result, the game time is taken into account, according to these rules (see the point 2. At definition of individual totals only the balls kicked into the goals of the competitor are taken into account.

Two variants of betting are offered on total: by two (under or over) or by three (under, over or equal) outcomes. Also double bet of total is offered, which is a multiple of 0.

homework 1

The sum of each common bet is equal to the half sum of double bet. For example:Bet Sport event Double bet of total Odd Sum1 Milan - Juventus Over 2. One common bet of double total (Under 2) has won with the odd "1", and the other (Under 2. Two common bets of double total (Over 2.

Two common bets of double total (Under 2. Score of the match. The result of the first half and the whole match. It is necessary to guess both outcomes of the first half and the outcome of the whole match. The following designation is used in the line.


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