A random sample of 85 group leaders, supervisors, and similar personnel at General Motors revealed that, on average, they spent 6.5 years in a particular job before being promoted. The standard deviation of the sample was 1.7 years.

Construct a 95% confidence interval. (Round your answers to 2 decimal places.)

For which of the following counts would a binomial probability model not be reasonable? a)the number of people in a classroom born in januaryb) the number of people in a classroom with red hair c) the number of people admitted to a hospital in a day with a particular disease d) the number of heart beats in a one-minute perio.

Issof claims that the scale factor is 1/2. which statement about his claim is correct

Kira looked through online census information to determine the overage number of people living in the homes in her city what is true about kira's data collection?