Question

1.Based on historical data, your manager believes that 41% of the company’s orders come from first-time...

1.Based on historical data, your manager believes that 41% of the company’s orders come from first-time customers. A random sample of 174 orders will be used to estimate the proportion of first-time-customers. What is the probability that the sample proportion is between 0.33 and 0.49?( 4 decimal places).

2. In a recent year, the Better Business Bureau settled 75% of complaints they received. You have been hired by the Bureau to investigate complaints this year involving computer stores. You plan to select a random sample of complaints to estimate the proportion of complaints the Bureau is able to settle. Suppose your sample size is 119. What is the probability that the sample proportion will be at least 3 percent more than the population proportion?(4 decimals)


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