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Author Question: In a survey of 1000 Americans, 850 said that they own a cell phone. Assume that the survey was ... (Read 86 times)

Pea0909berry

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on: May 5, 2020

Question 1

An honest coin is tossed n times. Let the random variable X denote the number of heads tossed. How many tosses n are required to be 97.5% certain that X will be less than + 20?
◦ 100
◦ 800
◦ 400
◦ 200
◦ none of these

Question 2

In a survey of 1000 Americans, 850 said that they own a cell phone. Assume that the survey was properly conducted and that the 1000 people surveyed represent an unbiased sample of the entire population. Estimate the standard error for this survey.
◦ ≈ 0.1%
◦ ≈ 11.1%
◦ ≈ 11.3%
◦ ≈ 12.75%
◦ ≈ 1.1%
Excursions in Modern Mathematics ¦ Tannenbaum ¦ 9th Edition
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Marked as best answer by Pea0909berry on May 5, 2020

kescobar@64

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Reply #1 on: May 5, 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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Pea0909berry

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Reply 2 on: May 5, 2020
Gracias!

nguyenhoanhat

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

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