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Author Question: A recent survey found that 63% of all adults over 50 wear glasses for driving. In a random sample of ... (Read 147 times)

jerry coleman

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on: Feb 14, 2020

Question 1

The probability that an individual is left-handed is 0.16. In a class of 80 students, what is the mean and standard deviation of the number of left-handed students? Round to the nearest hundredth when necessary.
◦ mean: 12.8; standard deviation: 3.28
◦ mean: 80; standard deviation: 3.58
◦ mean: 12.8; standard deviation: 3.58
◦ mean: 80; standard deviation: 3.28

Question 2

A recent survey found that 63% of all adults over 50 wear glasses for driving. In a random sample of 20 adults over 50, what is the mean and standard deviation of the number who wear glasses? Round to the nearest hundredth when necessary.
◦ mean: 12.6; standard deviation: 3.55
◦ mean: 7.4; standard deviation: 2.16
◦ mean: 7.4; standard deviation: 3.55
◦ mean: 12.6; standard deviation: 2.16
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Marked as best answer by jerry coleman on Feb 14, 2020

Gabe

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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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Only 25% of students answer this correctly


jerry coleman

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Reply 2 on: Feb 14, 2020
Gracias!

Joy Chen

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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