Reference no: EM131115905
1) The critical value for a one-tail (upper) hypothesis test when the population standard deviation is known, the sample size is 30 or more, and α =0.02 is ________. Round to two decimal places.
A. 2.05
B. 2.33
C. 2.96
D. 2.58
2) Many hotel chains that offer free Wi-Fi service to their customers have experienced increasing demand for Internet bandwidth and increasing costs. One hotel chain 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 customers found that 63 have two Wi-Fi devices. The hotel chain would like to set α =0.05. The critical value for this hypothesis test would be ________.
A. 1.28
B. 2.33
C. 1.645
D.1.96
3) A golfer claims that his average golf score at the course he plays regularly is less than 90. Which of the following describes a Type II error?
A.The golfer concludes that the average score is 90 or more when, in reality, the average score is less than 90.
B.The golfer concludes that the average score is more than 90 when, in reality, the average score is equal to 90.
C. The golfer concludes that the average score is less than 90 when, in reality, the average score is 90 or more.
D.The golfer concludes that the average score is 90 or less when, in reality, the average score is equal to 90.
4) A travel website would like to test the hypothesis that the proportion of flights that arrive on-time is less than 0.80. A random sample of 110 flights found that 82 arrived on-time. The website would like to set α =0.02. The critical proportion for this hypothesis test would be ________. Round to three decimal places.
A. 0.722
B. 0.806
C. 0.795
D. 0.776
5) A website would like to test the hypothesis that the average length of an online video watched by a user is more than 6 minutes. A random sample of 40 people watched online videos that averaged 6.6 minutes in length. It is believed that the population standard deviation for the length of online videos is 1.7 minutes. The website would like to set α=0.05. Which one of the following statements is true?
A.Because the p-value is less than α, we reject the null hypothesis and conclude that the average length of an online video is more than 6 minutes.
B. Because the p-value is greater than α, we reject the null hypothesis and conclude that the average length of an online video is more than 6 minutes.
C. Because the p-value is greater than α, we fail to reject the null hypothesis and conclude that the average length of an online video is less than 6 minutes.
D. Because the p-value is less than α, we fail to reject the null hypothesis and conclude that the average length of an online video is less than 6 minutes.
6) A website would like to test the hypothesis that the average length of an online video watched by a user is more than 6 minutes. A random sample of 40 people watched online videos that averaged 6.6 minutes in length. It is believed that the population standard deviation for the length of online videos is 1.7 minutes. The website would like to set α =0.05. The critical value for this hypothesis test would be ________. Round to three decimal places.
A. 1.960
B. 1.645
C. 1.280
D. -1.960
What is accounted for in the fund you selected
: The capital projects fund or debt service fund. Additionally, address the following: What is accounted for in the fund you selected? What type of journal entries would you expect went into recording transactions for the fund? Why?
|
What are its coupon rate current yield and yield to maturity
: A 6-year bond pays interest of $80 annually and sells for $950. What are its coupon rate, current yield, and yield to maturity?
|
How does adr compare to civil litigation
: On what bases could a private dispute be decided in Federal Court? What is the result of a Motion to Dismiss if the moving party is successful? Define "Enforcing a Judgment."
|
Report on business analysis and evaluation of a company
: Prepare a project report on Business analysis and evaluation of a company and discuss about the various tools of Financial Analysis, Du Pont analysis and also throw light on the decomposition and analysis of sales growth and also Prospective Analysis..
|
Critical value for hypothesis test
: It is believed that the population standard deviation for the length of online videos is 1.7 minutes. The website would like to set α =0.05. The critical value for this hypothesis test would be ________. Round to three decimal places.
|
Cottonwood received their new product catalogs ordered
: Cottonwood received their new product catalogs ordered from a local print shop. The print shop billed Cottonwood $6,000 for 5,000 catalogs with payment terms of net 10.
|
What is the link between physical health and social factors
: What is the link between physical health and social factors? How is this explained by the biopsychosocial model - Why might obesity be prevalent in one culture over another?
|
What laws apply to temporary disability at the workplace
: What laws apply to temporary disability at the workplace? Under what general circumstances is the employee entitled to benefits? What are those benefits and who administers them?
|
Determining the proportion of cultures
: She constructed a 95% confidence interval for the proportion of cultures that are alive after 48 hours and got (0.828, 0.872). Which of the following is the most appropriate way to report or interpret this confidence interval?
|