People were polled on how many books they read the previous year. Initial survey results indicate that s= 14.3 books. Complete parts (a) through (d) below. Click the icon to view a partial table of critical values. (a) How many subjects are needed to estimate the mean number of books read the previous year within four books with 90% confidence? This 90% confidence level requires subjects. (Round up to the nearest subject.) Partial Critical Value Table Level of Confidence, (1-x) 100% 90% 95% 99% Area in Each Tail, Print 0.05 0.025 0.005 α 2 Done Critical Value, Zα/2 C... 1.645 1.96 2.575

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Q: People were polled on how many books they read the previous year. Initial survey results indicate…

A: Given,S = 13.3Margin of Error ∈ = 4∝ = 1-0.95∝ = 0.05∝2 = 0.025z0.025 = 1.96

Q: People were polled on how many books they read the previous year. Initial survey results indicate…

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Q: (a) How many subjects are needed to estimate the mean number of books read the previous year within…

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Q: People were polled on how many books they read the previous year. Initial survey results indicate…

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Q: People were polled on how many books they read the previous year. Initial survey results indicate…

A: Given: According to survey results; s=13.8 Margin of error, E=4 We need to determine the number of…

Q: People were polled on how many books they read the previous year. Initial survey results indicate…

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Q: People were polled on how many books they read the previous year. Initial survey results indicate…

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Q: People were polled on how many books they read the previous year. Initial survey results indicate…

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Q: People were polled on how many books they read the previous year. Initial survey results indicate…

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Q: ople were polled on how many books they read the previous year. Initial survey results indicate that…

A: Given,standard deviation (s)=17.8margin of error(E)=4α=1-0.95=0.05α2 =0.025z0.025 =1.96

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Q: People were polled on how many books they read the previous year. Initial survey results indicate…

A: Given data,s=11.3E=6z-value at 90% confidence is Zc=1.645