Answer:
I'm not sure what type of equations you are looking for but these are the most basic ones.
Step-by-step explanation:
Hope this helps! if you have any questions ask me in the comments.
The sum of two whole numbers is 84, and their positive difference is 18.What are the two numbers? Please help
2 answers:
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Answer: c. z = 1.35; Reject the null hypothesis
Step-by-step explanation:
Let be the average life expectancy of its batteries.
As per given , we have
Null hypothesis :
Alternative hypothesis :
Since is right-tailed and population standard deviation is also known, so we perform right-tailed z-test.
Test statistic :
where, n= sample size
= sample mean
= Population mean
=population standard deviation
For , we have
Critical one-tailed test value for 0.10 significance level :
Decision : Since critical z value (1.28) < test statistic (1.35), so we reject the null hypothesis .
[When critical value is less than the test statistic value , we reject the null hypothesis .]