Register
For a normal population with a mean of µ = 80 and a standard deviation of σ = 10, what is the probability of obtaining a sample mean greater than m = 75 for a sample of n = 25 scores?
9.5k views
1 vote
For a normal population with a mean of µ = 80 and a standard deviation of σ = 10, what is the probability of obtaining a sample mean greater than m = 75 for a sample of n = 25 scores?

User Brian Bruman
by
8.1k points

1 Answer

6 votes
On a TI-83/84 calculator,
.. normalcdf(75, 150, 80, 10/√(25)) = 0.9937903347

About 99.4%
User HereTrix
by
7.8k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.2m questions

11.9m answers

Other Questions

A bathtub is being filled with water. After 3 minutes 4/5 of the tub is full. Assuming the rate is constant, how much longer will it take to fill the tub?
Write words to match the expression. 24- ( 6+3)
A dealer sells a certain type of chair and a table for $40. He also sells the same sort of table and a desk for $83 or a chair and a desk for $77. Find the price of a chair, table, and of a desk.
9/10 divided by (1/10 plus 2/5)
Please solve the following equation. x-6x=56
Link Copied!