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  3. a) in order to estimate the population mean, μ,

a) In order to estimate the population mean, μ, to within 3 at 95% confidence, what...

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Question

Statistics

a) In order to estimate the population mean, μ, to within 3 at95% confidence, what is the minimum sample size required?(Assumeσ=6.7).

b) If just the population standard deviation were to increase,then the minimum sample size required would:

decrease /increase   

c)  If just the confidence level were to decrease(i.e. go from 95% to 90% confidence), then the minimum sample sizerequired would:

decrease/increase   

d) If just the bound within which μ was to be estimated were toincrease, then the minimum sample size requiredwould:  

decrease/increase

Answer & Explanation Solved by verified expert
4.2 Ratings (679 Votes)
Solution aGiven thatstandard deviation 67margin of error E 3At 95 confidence level the z is 1 95 1 095 005    See Answer
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