**Problem Statement:**A class consists of 40 students with an average age of 22. A professor takes a random sample of 5 students and calculates the sample average age. The professor again takes a random sample of 5 students and calculates the sample average age. The sample average _______.**Choices:**- ○ will be 22 in both samples- ○ will be the same in both samples but not 22- ○ may or may not be the same across the two samples- ○ none of the above are correct

2. The sample average is may or may not be the same across the two samples because selecting sample…

Answered: 2. A class consists of 40 students with…

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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A consumer products testing group is evaluating two competing brands of tires, Brand 1 and Brand 2. To do this, the group chooses 15 cars at random and installs both brands on each car. After all of the cars are driven over the standard test course for 20,000 miles, the amount of tread wear (in inches) on each brand of tire on each car is recorded. The data and the differences (Brand 1 minus Brand 2) are shown in the table below. Car Brand 1 Brand 2 Difference (Brand 1- Brand 2) Send data to calculator V 1 Lower limit: Upper limit: 0.25 0.97 2 0.28 0.40 0.59 3 4 X 0.24 5 0.33 6 S 0.26 0.17 0.52 0.08 0.35 7 0.27 0.48 8 9 0.35 0.22 0.12 0.86 10 0.28 1.19 11 12 13 0.35 0.27 0.28 0.35 0.03 0.82 14 15 0.25 0.26 -0.72 -0.31 0.05 0.07 -0.19 0.18-0.21 0.23 -0.64 -0.91 -0.01 -0.47 0.32 -1.02 -0.82 Assume that the population of these differences in tread wear (Brand 1 minus Brand 2) is approximately normally distributed. Construct a 99% confidence interval for μ, the population mean difference…
The data in the following table show the association between cigar smoking and death from cancer for 134,427 men. Note: current cigar smoker means cigar smoker at time of death.
Starting in 2000 and going through Hurricane Harvey in 2017, there have been 264 named storms in the past 18 years. Suppose we want to select a simple random sample of 12 named storms for further analysis. Each named storm is associated with a three-digit number between 001 and 264. The lists of numbers below are two rows of a table of random digits; please start at the far left of the first row and select a simple random sample of 12 named storms out of the total of 264 named storms. All that is required is to simply give the numbers of the 12 named storms that were chosen using the rows of random digits below. 459035 822957 232850 920854 829109 485767 859105 938502 948503 958239 447728 298347 103494 735599 201944 113927 104838 845902 003410 452229 793865 811299 357273 405820 198223 804367 a. Using the lines of random digits provided, the list of 12 numbers selected is as follows: 035, 232, 109, 105, 239, 103, 201, 113, 104, 003, 229 and 198. a. Using the lines of random digits…
6
Q6, what is the correct answer for this question
A researcher wants to determine if the number of years of education for a parent correlates with the number of years of education for their child. The table shows the number of years of education of the parent and the number of years of education of their child for a random sample of 7. Years of Education of Parent: 13, 9, 12, 10, 12, 10, 12 Years of Education of their Child: 15, 11, 10, 16, 17, 12, 17 Conduct a hypothesis test to determine if there is a significant linear correlation between the two variables. Use α = 0.05. If there is a significant linear correlation between the variables, determine the regression equation. There is a significant correlation between the variables and the regression equation is y' = 5.333 + 0.777x There is a significant correlation between the variables and the regression equation is y' = 0.777 + 5.333x There is not a significant correlation between the variables, so the regression equation should not be determined. There is a significant…
The ages (years) of three government officials when they died in office were 54, 45, and 61. Assuming that 2 of the ages are randomly selected with replacement, list the different possible samples.
A nationwide job recruiting firm wants to compare the annual incomes for childcare workers in Illinois and Massachusetts. Due to recent trends in the childcare industry, the firm suspects that the that the mean annual income of childcare workers in the state of Illinois is greater than the mean annual income of childcare workers in Massachusetts. To see if this is true, the firm selected random sample of 25 childcare workers from Illinois and an independent random sample of 25 childcare workers from Massachusetts and asked them to report their mean annual income. The data obtained were as follows. Annual income in dollars 45679, 47412, 38478, 44646, 44364, 45265, 41423, 45861, 45936, 34016, 43020, 4960o8, 43710, 45738, 41546, 38681, 34889, 39468, 45463, 53593, 40847, 38255, 45708, 57662, 54356 Illinois 41743, 36349, 44588, 40341, 32544, 38226, 46463, 42255, 38621, 32502, 37378, 40215, 41155, 38509, 47586, 46910, 56502, Massachusetts 48907, 41861, 51211, 55186, 39078, 48263, 48059,…
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Mensa requies a test score to be in the top 2%. The test has a mean of 100 and Std. Dev. of 15.and scores are normally distributed. If 4 subjects take the test and they have a mean of 132 but the individual scores are lost, can we conclude that all 4 of them are eligible for Mensa?
please explain!
2. In a population it is estimated that 20% have a desired trait of interest for the researcher. The researcher wants to know how many people on average he has to draw from a population to get 2 people with the trait. Use rows 20-24 of the Random Number Table to carry out the simulation. Explain clearly how you set up the problem and report your findings. Answer:

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