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 126 households is selected from the population. What is the probability that the sample proportion of households spending more than $125 a week is between 0.2 and 0.39? Answer =
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 126 households is selected from the population. What is the probability that the sample proportion of households spending more than $125 a week is between 0.2 and 0.39? Answer =
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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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 126 households is selected from the population. What is the probability that the sample proportion of households spending more than $125 a week is between 0.2 and 0.39?
Answer =
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