# Question

Identify the symmetrical interval that includes 95% of the sample means for a population with a mean equal to 45 and a standard deviation equal to 9 using a sample size of 36.

## Answer to relevant Questions

Consider a population of 250 with a mean of 60 and a standard deviation equal to 23. What is the probability of obtaining a sample mean of 62 or less with a sample size of 45? A study conducted by TomTom found that Hawaii had the slowest state highway drivers in the country. The drivers traveled at an average speed of 52.7 miles per hour (MPH). Assume the population standard deviation is 6.0 MPH. ...One semester I had a total of 80 students in my statistics classes. The average score for the class on the last exam I administered was 85.4 with a standard deviation of 4.9. A random sample of 32 students was selected. a. ...The following table shows the total points scored in the 16 National Football League games played during Week 1 of the 2012 season. a. Calculate the mean for this population. b. Calculate the sampling error using the first ...According to FedSmith. com, the average salary for a federal employee in 2012 was $ 74,804. Assume the population standard deviation is $ 15,300. A random sample of 34 federal employees is selected. a. What is the ...Post your question

0