A random survey of 75 death row inmates revealed that the mean length of time on death row is 17.2 years with a standard

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A random survey of 75 death row inmates revealed that the mean
length of time on death row is 17.2 years with a standard
deviation of 6.4 years. Conduct a hypothesis test to
determine if the population mean time on death row could likely be
15 years or not.
Part (a)
test of one mean
test of proportions
Part (b)
H0: 𝜇 = 15
Ha: 𝜇 ≠ 15H0: 𝜇 ≥ 15
Ha: 𝜇 < 15 H0: 𝜇 =
15
Ha: 𝜇 > 15H0: 𝜇 ≠ 15
Ha: 𝜇 =
15H0: 𝜇 ≤ 15
Ha: 𝜇 > 15
Part (c)
right-tailed test
left-tailed test
two-tailed test
Part (d)
n
𝜇
𝛼
𝜎
X
Part (e)
the number of inmates on death row
the proportion of time spent on death row for 75
inmates
the standard deviation of time spent on death row for 75
inmates
the amount of time spent on death row for 75 inmates
the mean time spent on death row for 75 inmates
Part (f)
Yes
No
Part (g)
(i) Enter your answer to one decimal place.
x =

(ii) Enter your answer to one decimal place.
s =

(iii) Enter your answer as a whole number.
n =
Part (h)
Normal test
Student's t-test
Part (i)
State the distribution to use for the hypothesis test. You NEED
NOT answer this question. Go to the next question.
Part (j)
Find the p-value. (Round your answer to four
decimal places.)
Part (k)
reject the null hypothesis
do not reject the null hypothesis
Since 𝛼 > p-value, we reject the null
hypothesis.
Since 𝛼 > p-value, we do not reject
the null hypothesis.
Since 𝛼 < p-value, we reject the null
hypothesis.
Since 𝛼 < p-value, we do not reject
the null hypothesis.
There is sufficient evidence to conclude that the mean length of
time on death row is not 15 years.
There is not sufficient evidence to conclude that the mean
length of time on death row is not 15 years.