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What is the probability that a widget selected at random

Assignment Help Basic Statistics
Reference no: EM132857153

Please answer the following question. If it asks to provide a diagram please provide a diagram.

  1. The lengths of widgets at ACME WIDGET are normally distributed with a mean of 15 inches and a standard deviation of 4.34 inches. Provide diagrams. a) What is the probability that a widget selected at random will be less than 17.66 inches? b) If a random sample of 10 students is selected, what is the probability that the sample mean will be less than 17.66 inches?
  2. ROYAL FINANCE takes a sample of 5 employees and finds that the sample mean hourly rate was $175 with a sample standard deviation of $30. Construct a 90% confidence interval for the population average hourly rate of all Royal Finance employees.

Reference no: EM132857153

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