Question

A Food Marketing Institute found that 32% of households spend more than $125 a week on groceries. Assume the population proportion is 0.32 and a simple random sample of 394 households is selected from the population. What is the probability that the sample proportion of households spending more than $125 a week is less than 0.31?

Note: You should carefully round any z-values you calculate to 4 decimal places to match wamap's approach and calculations.

Answer =  (Enter your answer as a number accurate to 4 decimal places.)

Answer 1

#the probability that the sample proportion of households spending more than $125 a week is less than 0.31 is 0.6914