Score: 0 of 1 pt 23of40(22 complete) 6.1.59 A soccer ball manufacturer wants to

Question

Score: 0 of 1 pt 23of40(22 complete) 6.1.59 A soccer ball manufacturer wants to estimate the mean circumference of soccer balls within 0 05 in (a Determine the minimum sample size requiredto con tud a 95% e dde ce i te val fr the p pulati mean As ne the po ulation standard d war h 025 in b) Repeat part (a) using a standard deviation of 0.35 in Which standard deviation requires a larger sample size? Explain (a) The minimum sample size required to construct a 95% con!dence interval using a populaio, standard deviation of 0 2S in h bd (Round up to the nearest integer )

Explanation / Answer

a)

b)

std deviation 0.35 require higher sample size

for 95 % CI value of z= 1.9600 standard deviation = 0.25 margin of error E = 0.05 required sample size n=(z/E)2                                         = 97

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