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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 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?
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...
9.2.8-T Question Help A sporting goods store believes the average age of its customers is 39...
9.2.8-T Question Help A sporting goods store believes the average age of its customers is 39 or less. A random sample of 40 customers was surveyed, and the average customer age was found to be 41.8 years. Assume the standard deviation for customer age is 9.0 years. Using c 0.01, complete parts a and 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. Determine...
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...
Suppose a university advertises that its average class sizes 35 or less. A student organization is...
Suppose a university advertises that its average class sizes 35 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 40 classes was selected, and the average class size was found to be 37. students. Assume that the standard deviation for class size of the college is 9 students. Using a = 0.05, complete parte a and b below a. Does the student...
A department store manager believes that the average age of their customers is at least 60....
A department store manager believes that the average age of their customers is at least 60. To prove their point, the manager randomly selects a sample of customers and records their ages. The data is listed below. At α = 0.01, test the manager's claim. 70 48 41 68 69 55 70 57 60 83 32 60 72 58 88 48 59 60 56 65 66 60 68 42 57 59 49 70 75 63 44
Suppose a university advertises that its average class size is 35 or less. A student organization...
Suppose a university advertises that its average class size is 35 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 40 classes was selected, and the average class size was found to be 38.1 students. Assume that the standard deviation for class size at the college is 9 students. Using a = 0.01, complete parts a and b below. a. Does the...
Suppose a university advertises that its average class size is 34 or less. A student organization...
Suppose a university advertises that its average class size is 34 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 40 classes was selected, and the average class size was found to be 37.3 students. Assume that the standard deviation for class size at the college is 9 students. Using a 0.05, complete parts a and b below. a. Does the student...
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 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 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...
9.2.8-T Question Help A sporting goods store believes the average age of its customers is 39 or less. A random sample of 40 customers was surveyed, and the average customer age was found to be 41.8 years. Assume the standard deviation for customer age is 9.0 years. Using c 0.01, complete parts a and 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. Determine...
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...
Suppose a university advertises that its average class sizes 35 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 40 classes was selected, and the average class size was found to be 37. students. Assume that the standard deviation for class size of the college is 9 students. Using a = 0.05, complete parte a and b below a. Does the student...
Suppose a university advertises that its average class size is 35 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 40 classes was selected, and the average class size was found to be 38.1 students. Assume that the standard deviation for class size at the college is 9 students. Using a = 0.01, complete parts a and b below. a. Does the...
Suppose a university advertises that its average class size is 34 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 40 classes was selected, and the average class size was found to be 37.3 students. Assume that the standard deviation for class size at the college is 9 students. Using a 0.05, complete parts a and b below. a. Does the student...
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