Find the minimum sample size n needed to estimate u for the given values of c, o, and E. c = 0.95, o = 7.8, and E = 1 Assume that a preliminary sample has at least 30 members. (Round up to the nearest whole number.)

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Find the minimum sample size n needed to estimate u for the given values of c, 6, and E.
c= 0.95, o = 7.8, and E = 1
Assume that a preliminary sample has at least 30 members.
(Round up to the nearest whole number.)
Transcribed Image Text:Find the minimum sample size n needed to estimate u for the given values of c, 6, and E. c= 0.95, o = 7.8, and E = 1 Assume that a preliminary sample has at least 30 members. (Round up to the nearest whole number.)
Expert Solution
Step 1

We have given that, 

Confidence level (c) = 0.95 or 95% , population standard deviation (σ) = 7.8 and margin of error (E) = 1 

Then, 

We will find the minimum sample size (n) = ? 

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