A population of values has a normal distribution with μ = 104.6 and = 47.1. You intend to draw a random sample of size n = 247. Round your answers to three decimal places. What is the mean of the distribution of sample means? What is the standard error of the sample mean?

A distribution of values is normal with a mean of 185.8 and a standard deviation of 24.3.Find P8, which is the score separating the bottom 8% from the top 92%.P8 =

Use the information to make a normal distribution using the Empirical Rule, label the mean and three standard deviations from the mean.

Let the physics exam scores X follow a normal distribution with mean 80 and standard deviation 10. What score the student should get to be from the better of 10%of students

Use the sample statistics to test the claim that the mean score on a final exam is more than 78. x¯=81x¯=81 s=10s=10 n=41

Use the normal distribution of SAT critical reading scores for which the mean is 504 and the standard deviation is 114. Assume the variable x is normally distributed. (a) What percent of the SAT verbal scores are less than 550? (b) If 1000 SAT verbal scores are randomly selected, about how many would you expect to be greater than 525? Click to view page 1 of the standard normal table. Click to view page 2 of the standard normal table. ww (a) Approximately % of the SAT verbal scores are less than 550. 745 (Round to two decimal places as needed.) 725229 Check answer ct:

In an Algebra class, the scores on a test are normally distributed. The middle 68% of the scores fall between 69 and 81. What are the mean and standard deviation for this data? Standard Normal Curve Mean: Standard Deviation:

Assume that intelligence follows a normal distribution and that on a standard test for intelligence the true mean (μ) is 100 with a standard deviation (σ) of 15. What test score do you need for your intelligence to be in the top 1% of the population?

The mean time it takes a group of students to complete a statistics final exam is 98 minutes, and the standard deviation is 9 minutes. Within what limits would you expect approximately 95% of the students to complete the exam? Assume the variable is approximately normally distributed.

How do you find IQR with mean and standard deviation of normal distribution. when the mean is 15 and SD is 5