A psychologist claims that the number of repeat offenders will decrease iffirst time offenders complete a particular rehabilitation course. Yourandomly select 6 prisons and record the number of repeat offendersduring a two-year period. Then, after first-time offenders complete thecourse, you record the number of repeat offenders at each prison foranother two-year period. The results are shown in the following table.2 3 4 5 6Prison 1Before 23 3494032 54After 19 20 15 312129What is the test statistics and corresponding p-value?(A) Zobs=5-3√6+0.5*0.5' P-value = P(Z < Zobs), where Z~ N(0,1)5-3(B) Zobs = √6*0.5*0.5' P-value = P(Z > Zobs), where Z~ N(0,1)(C) Tobs =5, p-value = P(T < Tobs), where T~ Bin(6,0.5)(D) Tobs =5, p-value = P(T≥ Tobs), where T~ Bin (6,0.5)

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Answered: A psychologist claims that the number…

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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The success of an airline depends heavily on its ability to provide a pleasant customer experience. One dimension of customer service on which airines compete is on-time arrival. The file LateFlights contains a sample of data from delayed fights showing the number of minutes each delayed fight was late for two different airlines, Deita and Southwest. Click on the datafile logo to reference the data. DATA file Delta Southwest Delta Southwest Delta Southwest Delta Southwest Delta 36 30 34 38 119 120 63 37 35 67 114 53 102 55 8 87 68 100 43 50 86 74 17 66 87 35 40 34 64 41 53 30 86 33 57 61 7. 46 52 26 70 62 75 54 80 a. Formulate the hypotheses that can be used to test for a difference between the population mean minutes late for delayed flights by these two airlines. H1= population mean minutes late for delayed Deita flights Ha= population mean minutes late for delayed Southwest flights Ho: H- 2 Select your answer H.: -a -Select your answer b. What is the sample mean number of minutes…
The values listed below are waiting times (in minutes) of customers at two different banks. At Bank A, customers enter a single waiting line that feeds three teller windows. At Bank B, customers may enter any one of three different lines that have formed at three teller windows. Answer the following questions. Bank A 6.3 6.6 6.7 6.8 7.1 7.3 7.6 7.8 7.8 7.8 Bank B 4.3 5.4 5.8 6.3 6.7 7.7 7.7 8.5 9.3 10.0 Click the icon to view the table of Chi-Square critical values. Construct a 90% confidence interval for the population standard deviation o at Bank A. min < OBank A < min (Round to two decimal places as needed.) Construct a 90% confidence interval for the population standard deviation o at Bank B. |min < OBank B< min (Round to two decimal places as needed.) Interpret the results found in the previous parts. Do the confidence intervals suggest a difference in the variation among waiting times? Does the single-line system or the multiple-line system seem to be a better arrangement? O A.…
The values listed below are waiting times (in minutes) of customers at two different banks. At Bank A, customers enter a single waiting line that feeds three teller windows. At Bank B, customers may enter any one of three different lines that have formed at three teller windows. Answer the following questions. Bank A 6.5 6.6 6.7 6.8 7.1 7.2 7.4 7.8 7.8 7.8 Bank B 4.1 5.3 5.9 6.2 6.7 7.6 7.6 8.6 9.2 10.0 A. Construct a 90%confidence interval for the population standard deviation σ at Bank A _____min <o Bank A < ______min…
The values listed below are waiting times (in minutes) of customers at two different banks. At Bank A, customers enter a single waiting line that feeds three teller windows. At Bank B, customers may enter any one of three different lines that have formed at three teller windows. Answer the following questions. Bank A 6.4 6.6 6.7 6.8 7.1 7.3 7.6 7.9 7.9 7.9 Bank B 4.2 5.4 5.8 6.2 6.7 7.6 7.6 8.5 9.2 10.0 Click the icon to view the table of Chi-Square critical values. Construct a 99% confidence interval for the population standard deviation o at Bank A. min < OBank A min (Round to two decimal places as needed.)
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You have a small sample of voting information for a recent election. This includes data on which party a person voted for (dem-1 for democrat, =0 for other), gender (male=1 for male, =0 for female), income (in thousands of dollars) and age (in years). You create a table tabulating votes by gender. 1 dem I 01 11 0.045 O.348 545 0.602 -+- O.500 male 0 10 12 Total I 22 In a linear probability model of dem on male, what is the intercept coefficient? (Hint: calculate the relevant probabilities.) 11 Total 81 18 61 18 ------- + 141 36
The values listed below are waiting times (in minutes) of customers at two different banks. At Bank A, customers enter a single waiting line that feeds three teller windows. At Bank B, customers may enter any one of three different lines that have formed at three teller windows. Answer the following questions. Bank A 6.3 6.6 6.7 6.8 7.1 7.3 7.5 7.8 7.8 7.8 Bank B 4.2 5.5 5.9 6.3 6.7 7.7 7.7 8.5 9.3 10.0 Click the icon to view the table of Chi-Square critical values. Construct a 90% confidence interval for the population standard deviation o at Bank A. 7:6
The values listed below are waiting times (in minutes) of customers at two different banks. At Bank A, customers enter a single waiting line that feeds three teller windows. At Bank B, customers may enter any one of three different lines that have formed at three teller windows. Answer the following questions. Bank A 6.3 6.6 6.7 6.8 7.1 7.2 7.5 7.7 7.7 7.7 Bank B 4.2 5.4 5.8 6.3 6.6 8.4 9.4 10.0 7.7 7.7 Click the icon to view the table of Chi-Square critical values. Construct a 99% confidence interval for the population standard deviation o at Bank A. min < OBank A < min (Round to two decimal places as needed.)
The female life expectancy and the male life expectancy (in years) for 30 industrial countries were recorded. The data are shown in the back-to-back stemplot below. Female Life Expectancy Male Life Expectancy 68 69 69 70 18 71 72 9 8 73 0 74 9 75 12 5 68 9 76 2 2 7 789 99 77 1 2 4 5 6 7 78 0 4 5 6 7 4 1 79 2 4 2 80 988 7 7 6 6 4 1 81 8 7 5 3 3 2 82 998 32 183 84 5 85 6816 represents 68.6 years Based on the stemplot, which of the following statements is true? (A) The median life expectancy and the range of life expectancies are both less for females than for males in these countries. (B) The median life expectancy and the range of life expectancies are both greater for females than for males in these countries. (C) The median life expectancy is the same for females and males in these countries, and the range of life expectancies is the same for females and for males in these countries. (D) The median life expectancy is less for females than for males in these countries, and the range of…
A psychologist claims that the number of repeat offenders will tend to change if first time offenders complete a particular rehabilitation course. You randomly select 20 prisons and record the number of repeat offenders during a two year period. Then, after first time offenders complete the course, you record the number of repeat offenders at each prison for another two year period. The results are shown in the following table. Prison 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20Before 21 34 9 45 30 54 37 36 33 40 11 25 13 8 14 21 18 33 40 10After 19 22 16 31 30 30 22 18 17 21 19 25 13 14 23 21 12 32 25 10Conduct a sign test at 0.05 significance level. Test if the number of offenders before rehabilitation is significantly different to the number of repeat offenders
The values listed below are waiting times (in minutes) of customers at two different banks. At Bank A, customers enter a single waiting line that feeds three teller windows. At Bank B, customers may enter any one of three different lines that have formed at three teller windows. Answer the following questions. Bank A 6.4 6.6 6.7 6.8 7.1 7.3 7.6 7.9 7.9 7.9 Bank B 4.2 5.4 5.8 6.2 6.7 7.6 7.6 8.5 9.2 10.0 Click the icon to view the table of Chi-Square critical values. Construct a 99% confidence interval for the population standard deviation o at Bank A. 0.36 min

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