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Author Question: Solve the problem. Round your answer to one decimal place, if necessary.A random sample of 30 ... (Read 30 times)

big1devin

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on: Jan 18, 2020

Question 1

Solve the problem. Round your answer to the nearest whole number unless indicated otherwise.

A sample of 400 employees from a particular software company had a mean monthly income of with a standard deviation of . Find the 95% confidence interval. Round your answer to the nearest dollar.
◦ $7012 < μ < $7564
◦ $7274 < μ < $7302
◦ $6984 < μ < $7592
◦ $7150 < μ < $7426

Question 2

Solve the problem. Round your answer to one decimal place, if necessary.

A random sample of 30 seventh grade students was selected from a particular school district. The students were asked how many siblings they had. The responses are given below. Find a 95% confidence interval for the mean number of siblings for the population of seventh grade students in this school district.



◦ 1 sibling < μ < 2.5 siblings
◦ 1.3 siblings < μ < 2.5 siblings
◦ 1.4 siblings < μ < 2.1 siblings
◦ 1.1 siblings < μ < 2.3 siblings
Statistical Reasoning for Everyday Life ¦ Bennett, Briggs, Triola ¦ 5th Edition
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Marked as best answer by big1devin on Jan 18, 2020

jxjsniuniu

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Reply #1 on: Jan 18, 2020
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big1devin

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Reply 2 on: Jan 18, 2020
YES! Correct, THANKS for helping me on my review

yeungji

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Reply 3 on: Yesterday
:D TYSM

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