Solve the problem.
-In a certain population, body weights are normally distributed with a mean of 152 pounds and a standard deviation of 26 pounds. How many people must be surveyed if we want to estimate the percentage who weigh more than 180 pounds? Assume that we want 96% confidence that the error is no more than 2 percentage points.
A)923
B)1267
C)2001
D)2628

Question

Quizplus · Accepted Answer

The Answer of Solve the problem.
-In a certain population, body weights are normally distributed with a mean of 152 pounds and a standard deviation of 26 pounds. How many people must be surveyed if we want to estimate the percentage who weigh more than 180 pounds? Assume that we want 96% confidence that the error is no more than 2 percentage points.
A)923
B)1267
C)2001
D)2628

Solve the Problem. -In a Certain Population, Body Weights Are Normally Distributed with Normally