Friday
March 27, 2015

Homework Help: Probability and Statistics

Posted by Kim on Sunday, April 29, 2012 at 7:52pm.

A research psychologist believes that professional athletes tend to be more confident than the typical person. From previous testing, he knows that the scores for people in the general population are approximately normally distributed with a mean of 72 and standard deviation of 14. A random sample of 15 athletes produces a sample mean of 76.5 with a sample standard deviation of 12.5. Is there enough evidence at he alpha= 0.10 significance level to indicate that professional athletes are more confident?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Statistics - The next three questions refer to the following situation. Data ...
statistics - Sat scores l around the nation tend to have a mean score around 500...
statistics - sat scores around the nation tend to have a mean score around 500, ...
Math (Statistics) - The SAT scores of a certain population of students are ...
statistics college - SATI SCORES AROUND THE NATION HAVE A MEAN SCORE AROUND 500 ...
statistics - Just wondering if someone is able to give instructions as to how to...
statistics - sat scores around the nation tend to have a mean score of about 500...
statistics - For problems 12 to 14, do the following: (a) Make a scatter diagram...
statistics - For problems 12 to 14, do the following: (a) Make a scatter diagram...
Statistics - (1) Gluten sensitivity, which is also known as wheat intolerance, ...

Members