Question
A researcher knows that the weights of 6-year-olds are normally distributed with mu=20.9 and sigma=3.2. She suspects that children in poverty-stricken regions are undernourished and
A researcher knows that the weights of 6-year-olds are normally distributed with mu=20.9 and sigma=3.2. She suspects that children in poverty-stricken regions are undernourished and therefore underweight. With a sample of n=16 children, the researcher obtains a sample mean of M=18.3. Use a one-tailed test and the .01 of significance to determine if the wights for this sample are significantly lower than what would be expected for the regular population of 6-year-olds.
What is z?
What is the critical value?
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started
Elementary Statisitcs
Authors: Barry Monk
2nd edition
1259345297, 978-0077836351, 77836359, 978-1259295911, 1259295915, 978-1259292484, 1259292487, 978-1259345296
