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Author Question: The mean replacement time for a random sample of 12 CD players is 8.6 years with a standard ... (Read 77 times)

chads108

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on: Feb 14, 2020

Question 1

The mean systolic blood pressure for a random sample of 28 women aged 18-24 is 112.4 mm Hg and the standard deviation is 12.8 mm Hg. Construct a 90% confidence interval for the standard deviation σ,  of the systolic blood pressures of all women aged 18-24. Round to the nearest hundredth when necessary.
◦ (9.98, 17.92)
◦ (10.34, 16.17)
◦ (10.5, 16.55)
◦ (10.97, 15.63)

Question 2

The mean replacement time for a random sample of 12 CD players is 8.6 years with a standard deviation of 3.4 years. Construct the 99% confidence interval for the population variance, σ2. Assume the data are normally distributed, and round to the nearest hundredth when necessary.
◦ (1.4, 14.37)
◦ (2.18, 6.99)
◦ (4.75, 48.85)
◦ (5.14, 41.64)
Statistics ¦ McClave, Sincich, Tamarack ¦ 12th Edition
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Marked as best answer by chads108 on Feb 14, 2020

akudia

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Reply #1 on: Feb 14, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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chads108

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Reply 2 on: Feb 14, 2020
Great answer, keep it coming :)

mammy1697

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Reply 3 on: Yesterday
Gracias!

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