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Author Question: Parking at a large university can be extremely difficult at times. One particular university is ... (Read 75 times)

WWatsford

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on: Feb 14, 2020

Question 1

Explain what the phrase 95% confident means when we interpret a 95% confidence interval for μ.
◦ 95% of similarly constructed intervals would contain the value of the sampled mean.
◦ The probability that the sample mean falls in the calculated interval is 0.95.
◦ 95% of the observations in the population fall within the bounds of the calculated interval.
◦ In repeated sampling, 95% of similarly constructed intervals contain the value of the population mean.

Question 2

Parking at a large university can be extremely difficult at times. One particular university is trying to determine the location of a new parking garage. As part of their research, officials are interested in estimating the average parking time of students from within the various colleges on campus. A survey of 338 College of Business (COBA) students yields the following descriptive information regarding the length of time (in minutes) it took them to find a parking spot. Note that the "Lo 95%" and "Up 95%" refer to the endpoints of the desired confidence interval.

Variable         N     Lo 95% CI       Mean      Up 95% CI         SD
Parking Time    338      9.1944         10.466      11.738         11.885

University officials have determined that the confidence interval would be more useful if the interval were narrower. Which of the following changes in the confidence level would result in a narrower interval?
◦ The university could increase their confidence level.
◦ The university could decrease their confidence level.
Statistics ¦ McClave, Sincich, Tamarack ¦ 12th Edition
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Marked as best answer by WWatsford on Feb 14, 2020

poopface

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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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WWatsford

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

parshano

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Reply 3 on: Yesterday
Wow, this really help

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