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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