A Food Marketing Institute found that 42% of households spend more than $125 a week on groceries. Assume the population proportion is 0.42 and a simple random sample of 193 households is selected from...

A Food Marketing Institute found that 42% of households spend more than $125 a week on groceries. Assume the population proportion is 0.42 and a simple random sample of 193 households is selected from the population. What is the probability that the sample proportion of households spending more than $125 a week is between 0.31 and 0.49?


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.)