The president of Doerman Distributors, Inc., believes that 30% of the firm's orders come from first-time customers. A random sample of 100 orders will be used to estimate the proportion of first-time customers. Assume that the president is correct and p = .30. What is the sampling distribution of for this study?
A normal distribution because np and n(1-p) are both greater than 5A normal distribution because np and n(1-p) are both less than 5A non normal distributionItem
What is the probability that the sample proportion will be between .20 and .40 (to 4 decimals)?
What is the probability that the sample proportion will be between .25 and .35 (to 4 decimals)?