Question

1.

A group of students estimated the length of one minute without reference to a watch or​ clock, and the times​ (seconds) are listed below. Use a

0.05

significance level to test the claim that these times are from a population with a mean equal to 60 seconds. Does it appear that students are reasonably good at estimating one​ minute?

68

81

37

68

45

25

63

66

69

47

61

72

91

92

64

_____________________

Assuming all conditions for conducting a hypothesis test are​ met, what are the null and alternative​ hypotheses?

A.

H0​:

μ=60

seconds

H1​:

μ≠60

seconds

B.

H0​:

μ=60

seconds

H1​:

μ>60

seconds

C.

H0​:

μ=60

seconds

H1​:

μ<60

seconds

D.

H0​:

μ≠60

seconds

H1​:

μ=60

seconds

______________

Determine the test statistic. (Round to two decimal places as​ needed.)

Determine the​ P-value. ​(Round to three decimal places as​ needed.)

State the final conclusion that addresses the original claim.

" reject " " fail to reject "

H0.

There is sufficient

not sufficient

evidence to conclude that the original claim that the mean of the population of estimates is

60

seconds

▼

"is"

"is not"

correct. It

"does not appear"

"appears"

​that, as a​ group, the students are reasonably good at estimating one minute.

Answer 1

There is sufficient evidence to conclude that the original claim that the mean of the population of estimates is 60 seconds is correct,

It "appears" ​that, as a​ group, the students are reasonably good at estimating one minute.