Question
Suppose a random sample of size 36 is selected from a population with mean , the value of which is unknown. The sample had a
Suppose a random sample of size 36 is selected from a population with mean , the value of which is unknown. The sample had a mean of 10.5 and a standard deviation of 12. You are given the following hypotheses:
Ho: = 8
HA: > 8
If testing at of 5%, which of the following is the correct decision and conclusion?
As Z calculated of 1.25 is less than Z critical of 1.645, we reject Ho and conclude there is significant evidence the population mean is greater than 8.
As Z calculated of 1.25 is less than Z critical of 1.645, we retain Ho and conclude there is no significant evidence the population mean is greater than 8.
As t calculated of 1.25 is less than t critical of 1.69, we retain Ho and conclude there is no significant evidence the population mean is greater than 8.
As t calculated of 1.25 is less than t critical of 1.69, we reject Ho and conclude there is significant evidence the population mean is greater than 8.
None of these choices is correct
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