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9.2.8-T Question Help A sporting goods store believes the average age of its customers is 39...
A sporting goods store believes the average age of its customers is 38 or less. A...
A sporting goods store believes the average age of its customers is 38 or less. A random sample of 39 customers years. Using a = 0.01, complete parts a and b below. a. Does the sample provide enough evidence to refute the age claim made by the sporting goods store? Determine the null and alternative hypotheses. Нор Hyu The z-test statistic is (Round to two decimal places as needed.) The critical z-score(s) is(are) (Round to two decimal places as needed....
A sporting goods store believes the average age of its customers is 34 or less, but...
A sporting goods store believes the average age of its customers is 34 or less, but a competitor wants to challenge this. A random sample of 38 customers was surveyed, and the average customer age was found to be 37.5 years. Assume the standard deviation for customer age is 7.0 years. Using a = 0.05, complete parts a through d below a. Does the sample provide enough evidence to refute the age claim made by the sporting goods store? Determine...
A sporting goods store believes the average age of its customers is 37 or less. A...
A sporting goods store believes the average age of its customers is 37 or less. A random sample of 44 customers was surveyed, and the average customer age was found to be 39.8 years. Assume the standard deviation for customer age is 7.0 years. Using a = 0.05, complete parts a and b below. a. Does the sample provide enough evidence to refute the age claim made by the sporting goods store? Determine the null and alternative hypotheses. Ho: H4:
A sporting oods store be eves the average age its customers is 40 o ess A...
A sporting oods store be eves the average age its customers is 40 o ess A and m sample o 45 o stormers es surveyed and the eve a e customer 8 e wes ou d to be 4 3 yees Aasume dard deviation or cust me geb ז years Usi a 001 com leteparts 88 dbbek e e Does the sample provide enough avidence to refute the age claim mada by the sporting goods storc? Dstanmine the nul and...
A sporting goods store believes the average age of its customers is 36 or less.
A sporting goods store believes the average age of its customers is 36 or less. A random sample of 49 customers was surveyed, and the average customer age was found to be 38.3 years. Assume the standard deviation for customer age is 8.0 years. Using α=0.05, complete parts a and b below.a. Does the sample provide enough evidence to refute the age claim made by the sporting goods store?
Suppose a university advertises that its average class size is 31 or less. A student organization...
Suppose a university advertises that its average class size is 31 or less. A student organization is concerned that budget cuts have led to increased class sizes and would like to test this claim. A random sample of 42 classes was selected, and the average class size was found to be 33.8 students. Assume that the standard deviation for class size at the college is 88 students. Using alpha=0.05, complete parts a and b below. a. Does the student organization...
A comparison between a major sporting goods chain and a specialty runners' store was done to...
A comparison between a major sporting goods chain and a specialty runners' store was done to find who had lower prices on running shoes. A sample of 27 different shoes was priced (in dollars) at both stores. To test whether the average difference is greater than zero, the hypotheses are as follows: Null Hypothesis: HD = 0, Alternative Hypothesis: MD > 0. If the average difference between the two stores (specialty - chain) is 0.72 with a standard deviation of...
A pizza place recently hired additional drivers and as a result now claims that its average...
A pizza place recently hired additional drivers and as a result now claims that its average delivery time for orders is un minutes. Historically, the standard deviation for delivery time is 11.6 minutes. Using a = 0.01, complete parts a and bb a. Does this sample provide enough evidence to support the delivery time claim made by the pizza place? Determine the null and alternative hypotheses. Ho: H, :μ The Z-test statistic is (Round to two decimal places as needed.)...
Consider the hypotheses shown below. Given that x overbar= 40 ,sigma=11 ,n=33, alpha=0.10 , complete parts...
Consider the hypotheses shown below. Given that x overbar= 40 ,sigma=11 ,n=33, alpha=0.10 , complete parts a and b. Upper H 0 : mu less than or=38 Upper H 1: mu greater than38 a. What conclusion should be drawn? b. Determine the p-value for this test. a. The z-test statistic is . (Round to two decimal places as needed.) The critical z-score(s) is(are) . (Round to two decimal places as needed. Use a comma to separate answers as needed.) Because...
Suppose a university advertises that its average dlass size is 33 or less. A student onganization...
Suppose a university advertises that its average dlass size is 33 or less. A student onganization is concerned that budget cuts have led to increased class sizes and would like to test this claim. A random sample of 43 ciasses was selected, and the average class size was found to be 36.2 students. Assume that the standard deviation for class size at the college is 8 students. Using a 0.05, complete parts a and b below a. Does the student...
A sporting goods store believes the average age of its customers is 38 or less. A random sample of 39 customers years. Using a = 0.01, complete parts a and b below. a. Does the sample provide enough evidence to refute the age claim made by the sporting goods store? Determine the null and alternative hypotheses. Нор Hyu The z-test statistic is (Round to two decimal places as needed.) The critical z-score(s) is(are) (Round to two decimal places as needed....
A sporting goods store believes the average age of its customers is 34 or less, but a competitor wants to challenge this. A random sample of 38 customers was surveyed, and the average customer age was found to be 37.5 years. Assume the standard deviation for customer age is 7.0 years. Using a = 0.05, complete parts a through d below a. Does the sample provide enough evidence to refute the age claim made by the sporting goods store? Determine...
A sporting goods store believes the average age of its customers is 37 or less. A random sample of 44 customers was surveyed, and the average customer age was found to be 39.8 years. Assume the standard deviation for customer age is 7.0 years. Using a = 0.05, complete parts a and b below. a. Does the sample provide enough evidence to refute the age claim made by the sporting goods store? Determine the null and alternative hypotheses. Ho: H4:
A sporting oods store be eves the average age its customers is 40 o ess A and m sample o 45 o stormers es surveyed and the eve a e customer 8 e wes ou d to be 4 3 yees Aasume dard deviation or cust me geb ז years Usi a 001 com leteparts 88 dbbek e e Does the sample provide enough avidence to refute the age claim mada by the sporting goods storc? Dstanmine the nul and...
A sporting goods store believes the average age of its customers is 36 or less. A random sample of 49 customers was surveyed, and the average customer age was found to be 38.3 years. Assume the standard deviation for customer age is 8.0 years. Using α=0.05, complete parts a and b below.a. Does the sample provide enough evidence to refute the age claim made by the sporting goods store?
A comparison between a major sporting goods chain and a specialty runners' store was done to find who had lower prices on running shoes. A sample of 27 different shoes was priced (in dollars) at both stores. To test whether the average difference is greater than zero, the hypotheses are as follows: Null Hypothesis: HD = 0, Alternative Hypothesis: MD > 0. If the average difference between the two stores (specialty - chain) is 0.72 with a standard deviation of...
A pizza place recently hired additional drivers and as a result now claims that its average delivery time for orders is un minutes. Historically, the standard deviation for delivery time is 11.6 minutes. Using a = 0.01, complete parts a and bb a. Does this sample provide enough evidence to support the delivery time claim made by the pizza place? Determine the null and alternative hypotheses. Ho: H, :μ The Z-test statistic is (Round to two decimal places as needed.)...
Suppose a university advertises that its average dlass size is 33 or less. A student onganization is concerned that budget cuts have led to increased class sizes and would like to test this claim. A random sample of 43 ciasses was selected, and the average class size was found to be 36.2 students. Assume that the standard deviation for class size at the college is 8 students. Using a 0.05, complete parts a and b below a. Does the student...
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