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Below, n is the sample size, p is the population proportion of successes, and X is...

Below, n is the sample size, p is the population proportion of successes, and X is the number of successes in the sample. Use the normal approximation and the TI-84 Plus calculator to find the probability. Round the answer to at least four decimal places.

n=76, p=0.41

P(28<X<38) = ____?

Solutions

Expert Solution

TI 84 formula for P(Z < = 1.60) = normalcdf(E-99,1.6,0,1)

Access the normalcdf function on the calculator by pressing 2nd. Then press VARS to access the DISTR menu. Now enter the 4 important numbers in order. If you want all the numbers less than a certain value, your lower boundary will be negative infinity.

milcah answered 1 month ago
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