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Draw a sample size from normal distribution.

1. The mean number of travel days per year for salespeople employed by hardware distributors needs to be estimated with a 0.90 degree of confidence. For small pilot study mean was 150 days and the standard deviation was 14 days. If population mean is estimated within two days, how many salespeople should be sampled?

2. The amount of junior executives leaving large manufacturing companies within three years is to be estimated within 3 percent. The 0.95 degree of confidence is to be used. A study conducted several years ago revealed that percent of junior executives leaving within three years was 21. To update this study, the files of how a lot of junior executives must be studied?

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M919892

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