# Explanation a b c d 13 42 many hotel chains that

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39 )   You Tube would like to test the hypothesis that the average length of an online video watched by a user is more than 8 minutes . A random sample of 37 people watched online videos that averaged 39 ) 8.7 minutes in length . It is believed that the population standard deviation for the length of online videos is 2.5 minutes . You Tube would like to set ΅ = 0.02 . The correct hypothesis statement for this hypothesis test would be _________________________.
A ) H 0 : μ = 8.0 ; H 1 : μ J 8.0
B ) H 0 : μ L 8.0 ; H 1 : μ < 8.0
C ) H 0 : μ J 8.0 ; H 1 : μ = 8.0
D ) H 0 : μ K 8.0 ; H 1 : μ > 8.0
8.   7 minutes in length . It is believed that the population standard deviation for the length of online videos is 2.5 minutes . You Tube would like to set ΅ = 0.02 . The correct hypothesis statement for this hypothesis test would be _________________________.
40 )   Many franchisers favor owners who operate multiple stores by providing them with preferential treatment . Suppose the Small Business Administration would like to perform a hypothesis test to investigate if 80 % of franchisees own only one location using ΅ = 0.05 . A random sample of 120 franchisees found that 85 owned only one store . Which one of the following statements is true ?
41 )   Many hotel chains that offer free Wi - Fi service to their customers have experienced increasing demand for Internet bandwidth and increasing costs . Marriott International would like to test the hypothesis that the proportion of customers that are carrying two Wi - Fi devices exceeds 0.40 . A random sample of 130 Marriott customers found that 63 have two Wi - Fi devices . Marriott 41 ) International would like to set ΅ = 0.05 . The conclusion for this hypothesis test would be that because the test statistic is _________________________________________.
42 )   Many hotel chains that offer free Wi - Fi service to their customers have experienced increasing demand for Internet bandwidth and increasing costs . Marriott International would like to test the hypothesis that the proportion of customers that are carrying two Wi - Fi devices exceeds 0.60 . A random sample of 120 Marriott customers found that 78 have two Wi - Fi devices . Marriott 42 ) International would like to set ΅ = 0.01 . Which one of the following statements is true ?
A ) Because the p - value is greater than ΅ , we fail to reject the null hypothesis and conclude that the proportion of Marriott customers that carry two Wi - Fi devices is not more than 0.60 .
B ) Because the p - value is less than ΅ , we reject the null hypothesis and conclude that the proportion of Marriott customers that carry two Wi - Fi devices is greater than 0.60 .
C ) Because the p - value is less than ΅ , we fail to reject the null hypothesis and can not conclude that the proportion of Marriott customers that carry two Wi - Fi devices is less than 0.60 .
D ) Because the p - value is greater than ΅ , we reject the null hypothesis and can not conclude that the proportion of Marriott customers that carry two Wi - Fi devices is greater than 0.60 .
43 )   The National Center for Education Statistics would like to test the hypothesis that the proportion of Bachelor 's degrees that were earned by women equals 0.60 . A random sample of 140 college graduates with Bachelor degrees found that 75 were women . The National Center for Education Statistics would like to set ΅ = 0.10 . The correct hypothesis statement for this hypothesis test would be _______________________.
44 )   The National Center for Education Statistics would like to test the hypothesis that the proportion of Bachelor 's degrees that were earned by women equals 0.60 . A random sample of 140 college graduates with Bachelor degrees found that 75 were women . The National Center for Education 44 ) Statistics would like to set ΅ = 0.10 . The critical value for this hypothesis test would be ________.
45 )   Expedia would like to test the hypothesis that the proportion of Southwest Airline flights that arrive on - time is less than 0.90 . A random sample of 140 United Airline flights found that 119 45 ) arrived on - time . Expedia would like to set ΅ = 0.05 . Which one of the following statements is true ?
46 )   The power of the hypothesis test is the probability of of ____ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ___. 46 )
A )
B ) incorrectly rejecting the null hypothesis .
C ) incorrectly rejecting the alternative hypothesis .
D ) correctly rejecting the alternative hypothesis .
Answer:  A )   correctly rejecting the null hypothesis .
47 )   The test statistic for a hypothesis test ___ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __. 47 )
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Chapter 7 / Exercise 27
Statistics for Business & Economics, Revised
Anderson Expert Verified
Explanation:A)B)C)D)13
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Chapter 7 / Exercise 27
Statistics for Business & Economics, Revised
Anderson Expert Verified
42)Many hotel chains that offer free Wi-Fi service to their customers have experienced increasingdemand for Internet bandwidth and increasing costs. Marriott International would like to test thehypothesis that the proportion of customers that are carrying two Wi-Fi devices exceeds 0.60. Arandom sample of 120 Marriott customers found that 78 have two Wi-Fi devices. MarriottInternational would like to set ΅=0.01. Which one of the following statements is true?42)
Explanation:A)B)C)D)43)The National Center for Education Statistics would like to test the hypothesis that the proportion ofBachelor's degrees that were earned by women equals 0.60. A random sample of 140 collegegraduates with Bachelor degrees found that 75 were women. The National Center for EducationStatistics would like to set ΅=0.10. The correct hypothesis statement for this hypothesis test wouldbe _______________________.43)
0.60.
0.60.
Explanation:A)B)C)D)44)The National Center for Education Statistics would like to test the hypothesis that the proportion ofBachelor's degrees that were earned by women equals 0.60. A random sample of 140 collegegraduates with Bachelor degrees found that 75 were women. The National Center for EducationStatistics would like to set ΅= 0.10. The critical value for this hypothesis test would be ________.44)
Explanation:A)B)C)D)14
45)Expedia would like to test the hypothesis that the proportion of Southwest Airline flights thatarrive on-time is less than 0.90. A random sample of 140 United Airline flights found that 119arrived on-time. Expedia would like to set ΅=0.05. Which one of the following statements is true?45)A)Because the p-value is less than ΅, we reject the null hypothesis and conclude that theproportion of United Airline flights that arrive on-time is less than 0.90.B)Because the p-value is greater than ΅, we reject the null hypothesis and cannot conclude thatthe proportion of United Airline flights that arrive on-time is less than 0.90.C)Because the p-value is greater than ΅, we fail to reject the null hypothesis and cannotconclude that the proportion of United Airline flights that arrive on-time is less than 0.90.D)Because the p-value is less than ΅, we fail to reject the null hypothesis and cannot conclude
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