A sample of 125 is drawn from a population with a proportion equal to 0.45. a....

A sample of 125 is drawn from a population with a proportion equal to 0.45.

a. Determine the probability of observing between 50 and 54 successes.

b. Determine the probability of observing between 55 and 62 successes.

c. Determine the probability of observing between 53 and 70 successes.

Solutions

Expert Solution

Given :

A sample of 125 is drawn from a population with a proportion equal to 0.45

Binomial distribution

n = 125 & p = 0.45

= n×p = 125 × 0.45 = 56.25

= √np(1-p) = √56.25(1-0.45) = 5.5621

orchestra answered 1 year ago

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