29. [C7] Let X1, X2, ..., Xn be a random sample of size n drawn from...

Question

Question

29. [C7] Let X1, X2, ..., Xn be a random sample of size n drawn from a population with a mean of 20 and a standard deviation

math Statistics-And-Probability

Answer 1

Answer #1

Solution :

Given that ,

mean = $\mu$ = 20

standard deviation = $\sigma$ = 20

$\sigma$ $\bar x$ = 4

n = ( $\sigma$ / $\sigma$ $\bar x$ )2

n = ( 20 / 4 )2

n = 25

correct option is = b

Answer 2

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