The mean diameter of a ball bearing produced by a certain ma…

The mean diameter of a ball bearing produced by a certain manufacturer is 0.80 cm with a standard deviation of 0.03 cm. A sample of 36 ball bearings is randomly selected from a production run. Use Excel to answer the following questions:a.What is the probability that the sample of ball bearings will have a mean less than 0.798 cm?b.What is the probability that the sample of ball bearings will have a mean of at least 0.815 cm?c.What is the probability that the sample of ball bearings will have a mean between 0.798 and 0.815 cm? d.For samples of size 36, 15% of all sample means are at most what diameter?​

Starting salaries of a sample of 5 management majors along w…

Starting salaries of a sample of 5 management majors along with their genders are shown below. EmployeeSalary ($1000s)Gender  160F  256M  344F  452F  538M ​a.What is the point estimate for the starting salaries of all management majors?b.Determine the point estimate for the variance of the population.c.Determine the point estimate for the proportion of male employees.