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Do 1 1. At the Wilson manufacturing plant, assume the diameters of tennis balls

ID: 3361139 • Letter: D

Question

Do 1

1. At the Wilson manufacturing plant, assume the diameters of tennis balls have a normal distribution with a mean of 6.7 cm and standard deviation of.06 cm. The height of the canister that holds three tennis balls is 20.4cm. For a random sample of 3 tennis balls, what is the probability they will cause the lid to the canister not to fit? (Hint: you must consider how to use a sample mean in this context.) The distribution of the number of violent crimes per day in a certain city possesses a mean of 1.3 and a standard deviation of 1.7. A random sample of 50 days is observed, and the mean number of crimes 2. for this sample, , is calculated. Could the population consisting of the number of yialent crimes in a single day in this city be a)

Explanation / Answer

P( 3 tennis balls where the lid to the cansister not fit )

z=0.06/1.7321

=0.0346

=0.0346/6.75

=0.0051

p(z)=0.497

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