Security is investigating procedures at an airport to reduce the variability in the amount of time it takes passengers to get through airport security. The following table summarizes Sample standard deviation sample data collected from two different terminals employing different security procedures. Complete parts a and b. Terminal A Terminal B 7.9 minutes 8.7 minutes Sample size 18 12 a. Using a = 0.10, determine if the procedures at Terminal A more effectively reduce the variability than do the procedures at Terminal B. First identify the hypotheses. Choose the correct answer below. A. Ho: o so2 H;: o >o O C. Ho: o = 02 O B. Ho: o 203 H,: o

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Terminal A
Security is investigating procedures at an airport to reduce the variability in the amount of
time it takes passengers to get through airport security. The following table summarizes Sample standard deviation
sample data collected from two different terminals employing different security
procedures. Complete parts a and b.
Terminal B
7.9 minutes
8.7 minutes
Sample size
18
12
a. Using a = 0.10, determine if the procedures at Terminal A more effectively reduce the variability than do the procedures at Terminal B.
First identify the hypotheses. Choose the correct answer below.
O B. Hyi of z03
H,i of co
VA. Họ: 0 so3
H,: of >o?
O C. Ho: o = 02
H;: o #o
O D. Ho: o to2
2
Transcribed Image Text:Terminal A Security is investigating procedures at an airport to reduce the variability in the amount of time it takes passengers to get through airport security. The following table summarizes Sample standard deviation sample data collected from two different terminals employing different security procedures. Complete parts a and b. Terminal B 7.9 minutes 8.7 minutes Sample size 18 12 a. Using a = 0.10, determine if the procedures at Terminal A more effectively reduce the variability than do the procedures at Terminal B. First identify the hypotheses. Choose the correct answer below. O B. Hyi of z03 H,i of co VA. Họ: 0 so3 H,: of >o? O C. Ho: o = 02 H;: o #o O D. Ho: o to2 2
Calculate the appropriate test statistic.
The test statistic is.
(Round to two decimal places as needed.)
Determine the appropriate critical value(s).
The critical value(s) is(are)O
(Round to three decimal places as needed. Use a comma to separate answers as needed.)
the null hypothesis. There is
evidence to conclude there is a difference in the variability in the two terminals.
b. Use technology to find the p-value and interpret the result.
The p-value is.
(Round to three decimal places as needed.)
Since the p-value is
a = 0.10,
the null hypothesis. There is
V evidence to conclude there is a difference in
the variability in the two terminals.
Transcribed Image Text:Calculate the appropriate test statistic. The test statistic is. (Round to two decimal places as needed.) Determine the appropriate critical value(s). The critical value(s) is(are)O (Round to three decimal places as needed. Use a comma to separate answers as needed.) the null hypothesis. There is evidence to conclude there is a difference in the variability in the two terminals. b. Use technology to find the p-value and interpret the result. The p-value is. (Round to three decimal places as needed.) Since the p-value is a = 0.10, the null hypothesis. There is V evidence to conclude there is a difference in the variability in the two terminals.
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