Computers in Schools Elementary and secondary schools were dassified by the number of computers they had.doComputers 1-10 11-20 21-50 51-100 100+Schools2345 4325 18,241 22,343 34,343Send data to ExcelChoose one school at random. Find the probabilities of the following. Enter your answers as fractions or decimals rounded to 3decimal places.Part 1 of 3(a) 100 or fewer computersP(100 or fewer computers) =|Part 2 of 3(b) More than 50 computersP (more than 50 computers) =|%3!Part 3 of 3(c) No more than 20 computersP(no more than 20 computers) =Submit Assignment

From the provided information, Computers 1-10 11-20 21-50 51-100 100+ Schools…

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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(Use SAS) You have a Social Security number in columns 1-11 of a file, followed by one space, followed by ten 3-digit scores. Using a variable list and an inform al list, write a SAS program to read the sample data below, and create a SAS data set called SCORES. Name the 10 scores SCORE1 to SCORE10. 123-45-6789 100 98 96 95 92 88 95 98100 90 344-56-7234 69 79 82 65 88 78 78 92 66 77 898-23-1234 80 82 86 92 78 88 84 85 83
A farmer grows
A video game developer is testing a new game on three different groups. Each group represents a different target market for the game. The developer collects scores from a random sample from each group. The results are shown in the following table. Group A Group B Group C 101 151 101 108 149 109 98 160 198 107 112 186 111 126 161 What are the SSbetween and MSbetween? (Round your answers to one decimal place.) SSbetween = MSbetween =
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3899 you're a data analyst for an insurance company. You want to make sure that your employer is not over-paying for car repairs. To investigate this, you bring 38 different cars to two different garages, Bubba's Hubcap Heaven and Repair, and Merle's Motor Shop. Some of the cars need lots of repairs. Some of the cars need very few. By taking each car to both shops, we can directly compare the two sets of prices. Before running your analysis, be sure to look at the data file and verify that each car requires a different amount of repairs, and that prices in one shop are correlated with prices at the other shop. That is, they're in the same ballpark. The question is whether one tends to charge more, on average, than the other. Your task is to use Excel to test the research hypothesis that prices are different in the two shops; the null hypothesis is that prices are equal between the two shops. You test at the alpha = 0.01 significance level. What do you conclude? Are prices the same?…
Superpowers A total of 415 children from the United Kingdom and the United States who completed a survey in a recent year were randomly selected. Each student's country of origin was recorded along with which superpower they would most like to have: the ability to fly, ability to freeze time, invisibility, superstrength, or telepathy (ability to read minds). The data are summarized in the following table. Country U.K. U.S. Fly 54 45 Freeze time 52 44 Invisibility 30 37 Superpower 20 23 Superstrength Telepathy 44 66 a. What proportion of students in the sample are from the United States? b. Find the distribution of superpower preference for the students in the sample using relative frequencies. c. What percent of students in the sample are from the United Kingdom and prefer telepathy as their superpower preference?
State Debt and Per Capita Tax An economics student wishes to see if there is a relationship between the amount of state debt per capita and the amount of tax per capita at the state level. Based on the following data, can she or he conclude that per capita state debt and per capita state taxes are related? Both amounts are in dollars and represent five randomly selected states. Per capita debt x 1645 2781 1904 1791 3418 Per capita tax y 2423 3890 2129 2095 2214 (a) Compute the value of the correlation coefficient. Round your answer to at least three decimal places. r= (b) State the hypotheses. H0 : H1: (c) Test the significance of the correlation coefficient at α=0.05 , using The Critical Values for the PPMC Table. Critical values: ± ▼(Choose one) the null hypothesis. (d) Give a brief explanation of the type of relationship. There ▼(Choose…
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