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Author Question: A 90% confidence interval for the average salary of all CEOs in the electronics industry was ... (Read 139 times)

fox

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on: Feb 14, 2020

Question 1

A 90% confidence interval for the mean percentage of airline reservations being canceled on the day of the flight is (1.3%, 5%). What is the point estimator of the mean percentage of reservations that are canceled on the day of the flight?
◦ 3.7%
◦ 2.50%
◦ 3.15%
◦ 1.85%

Question 2

A 90% confidence interval for the average salary of all CEOs in the electronics industry was constructed using the results of a random survey of 45 CEOs. The interval was To make more useful inferences from the data, it is desired to reduce the width of the confidence interval. Which of the following will result in a reduced interval width?
◦ Decrease the sample size and decrease the confidence level.
◦ Decrease the sample size and increase the confidence level.
◦ Increase the sample size and increase the confidence level.
◦ Increase the sample size and decrease the confidence level.
Statistics ¦ McClave, Sincich, Tamarack ¦ 12th Edition
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Marked as best answer by fox on Feb 14, 2020

Jayson

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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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fox

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Reply 2 on: Feb 14, 2020
YES! Correct, THANKS for helping me on my review

atrochim

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Reply 3 on: Yesterday
:D TYSM

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