QUESTION 14 AI Ain municipality is deciding whether or not to spend more money to reduce the amount of traffic in the city. The municipality decides that it will increase the transportation budget if the amount of waiting time for drivers exceed 20 minutes. A sample of 31 main road results in a mean of waiting time of 22.0 minutes and a standard deviation of 5.4 minutes. Use a 0.01. UIE this investigation Insert in the box the letter that corresponds to the correct answer from the answers given below.

MATLAB: An Introduction with Applications
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QUESTION 14
AI Ain municipality is deciding whether or not to spend more money to reduce the amount of traffic in the city. The municipality decides that it will increase the
transportation budget if the amount of waiting time for drivers exceed 20 minutes. A sample of 31 main road results in a mean of waiting time of 22.0 minutes and
standard deviation of 5.4 minutes. Use a=0.01.
a
1) State the altemative hypothesis in this investigation. Insert in the box the letter that corresponds to the correct answer from the answers given below.
(a) H1: µ>20
(b) Hq: H#
20
(c) Hq: p<20
2) The test statistic equals
and the critical value is equal to
(Round the test statistic to 2 decimal places).
3) Insert in the box the letter that corresponds to the right conclusion from conclusions given below.
(a) The test statistics is geater than the critical value, therefore we reject Ho and support Hg.
(b) The test statistics is less than the critical value, therefore we do not reject Ho and support H1.
(c) The test statistics is less than the critical value, therefore we reject Ho and support H1.
(4) Construct a 99% confidence interval to estimate the proportion of white employees in the hight-tech firm:
Lower Confudence Limit is
and Upper Confidence Limit is
(Round to 3 decimal places)
Transcribed Image Text:QUESTION 14 AI Ain municipality is deciding whether or not to spend more money to reduce the amount of traffic in the city. The municipality decides that it will increase the transportation budget if the amount of waiting time for drivers exceed 20 minutes. A sample of 31 main road results in a mean of waiting time of 22.0 minutes and standard deviation of 5.4 minutes. Use a=0.01. a 1) State the altemative hypothesis in this investigation. Insert in the box the letter that corresponds to the correct answer from the answers given below. (a) H1: µ>20 (b) Hq: H# 20 (c) Hq: p<20 2) The test statistic equals and the critical value is equal to (Round the test statistic to 2 decimal places). 3) Insert in the box the letter that corresponds to the right conclusion from conclusions given below. (a) The test statistics is geater than the critical value, therefore we reject Ho and support Hg. (b) The test statistics is less than the critical value, therefore we do not reject Ho and support H1. (c) The test statistics is less than the critical value, therefore we reject Ho and support H1. (4) Construct a 99% confidence interval to estimate the proportion of white employees in the hight-tech firm: Lower Confudence Limit is and Upper Confidence Limit is (Round to 3 decimal places)
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