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Suppose a sample of n = 50 items is drawn from a population of manufactured products...

Suppose a sample of n = 50 items is drawn from a population of manufactured products and the weight, X, of each item is recorded. Prior experience has shown that the weight has a probability distribution with µ=6 ounces and σ=2.5 ounces. Which of the following is true about the sampling distribution of the sample mean if a sample of size 15 is selected?

Select one:

a. 45.8

b. 67.4

c. 77

d. 78.3

e. 56.6

Math   Statistics-And-Probability   
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Answer #1

I solved such type of many examples I surely say something is missing in this question

Such type questions asked for many times for standard error

Stdev /sqrt(n) = standard error

Mean will not change

SD=2.5/sqrt(15)=0.64

If any other queries please comment I will definitely help you

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