Problem 9 and 10: A simple random sample of 10 students is selected from Antelope Valley College. For the 10 students, the number o days cach was absent during the last semester was to be {3,7, 2, 1,0, 2, 4, 2, 6, and 2 }. Note that the mean x= 2.9 and the sample standard deviation is s = 2.18. 9. Calculate the 95% confidence interval for x where z 1.960. Report the final answer in the format of (a,b). CI =x+ Circle your answer below. (a) Cl = (2.21, 3.59) (b) CI (-10.61, 16.41) (c) CI (0.94, 4.86) (d) CI = (1.55,4.25) (e) CI = (-1.37, 7.17) 10. What is the margin of error? Circle your answer below. (a) Margin of error = t1.96 (b) Margin of error =t1.35 (c) Margin of error 10.69 (d) Margin of error 113.51 (e) Margin of error 14.27

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Problem 9 and 10:
A simple random sample of 10 students is selected from Antelope Valley College. For the 10 students, the number of
days cach was absent during the last semester was to be
{3,7, 2, 1, 0, 2, 4, 2, 6, and 2 }.
Note that the mean x= 2.9 and the sample standard deviation is s = 2.18.
9. Calculate the 95% confidence interval for x where z=1.960. Report the final answer in the format of (a,b).
Cl =it.
Circle your answer below.
(a) CI =(2.21, 3.59)
(b) Cl = (-10.61, 16.41)
(c) CI = (0.94, 4.86)
(d) CI = (1.55,4.25)
(e) CI = (-1.37, 7.17)
10. What is the margin of eror?
Circle your answer below.
(a) Margin of error = t1.96
(b) Margin of error =t1.35
(c) Margin of error = 10.69
(d) Margin of error t13.51
(c) Margin of error 14.27
Transcribed Image Text:Problem 9 and 10: A simple random sample of 10 students is selected from Antelope Valley College. For the 10 students, the number of days cach was absent during the last semester was to be {3,7, 2, 1, 0, 2, 4, 2, 6, and 2 }. Note that the mean x= 2.9 and the sample standard deviation is s = 2.18. 9. Calculate the 95% confidence interval for x where z=1.960. Report the final answer in the format of (a,b). Cl =it. Circle your answer below. (a) CI =(2.21, 3.59) (b) Cl = (-10.61, 16.41) (c) CI = (0.94, 4.86) (d) CI = (1.55,4.25) (e) CI = (-1.37, 7.17) 10. What is the margin of eror? Circle your answer below. (a) Margin of error = t1.96 (b) Margin of error =t1.35 (c) Margin of error = 10.69 (d) Margin of error t13.51 (c) Margin of error 14.27
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