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Author Question: A researcher found that a 98% confidence interval for the mean hours per week spent studying by ... (Read 143 times)

BrownTown3

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on: Aug 30, 2019

Question 1

Which of the following is true about Student's t-models?
I.   They are unimodal, symmetric, and bell shaped.
II.  They have fatter tails than the Normal model.
III. As the degrees of freedom increase, the t-models look more and more like the Normal.
◦ I and III
◦ II and III
◦ I, II, and III
◦ I and II
◦ I only

Question 2

A researcher found that a 98% confidence interval for the mean hours per week spent studying by college students was (13, 17). Which is true?
I.   There is a 98% chance that the mean hours per week spent studying by college students is between 13 and 17 hours.
II.  98% of college students study between 13 and 17 hours a week.
III. Students average between 13 and 17 hours per week studying on 98% of the weeks.
◦ I and III
◦ II only
◦ none
◦ I only
◦ III only
Stats: Modeling the World ¦ Bock, Velleman, De Veaux ¦ 4th Edition
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Marked as best answer by BrownTown3 on Aug 30, 2019

cadimas

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Reply #1 on: Aug 30, 2019
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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BrownTown3

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Reply 2 on: Aug 30, 2019
Wow, this really help

alvinum

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Reply 3 on: Yesterday
Gracias!

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