Answer:
Option B) Fail to reject the null hypothesis that the true population mean annual salary of full-time college professors in the region is equal to $127,000.
Step-by-step explanation:
We are given the following in the question:
Population mean, μ = $127,000
Sample mean, = $126,092
Sample size, n = 160
Alpha, α = 0.10
Sample standard deviation, σ = $8,509
First, we design the null and the alternate hypothesis
We use Two-tailed t test to perform this hypothesis.
Formula:
Now,
Since,
The calculated t-statistic lies in the acceptance region, we fail to reject and accept the null hypothesis.
Option B) Fail to reject the null hypothesis that the true population mean annual salary of full-time college professors in the region is equal to $127,000.
Idk may you she should have counted nmp jk its 36
So 3/4 converted to a decimal is 0.75 .
0.75 X 26 = 19.5
So the answer could be 19.5, but if that’s not available it’s probably because they want it converted back to a fraction.
The answer would be 39/2. Still don’t see that as an answer choice? They might want you to convert that to a mixed number which is 19 1/2 .
Answer: 19.5 , 39/2, or 19 1/2
All are correct
A) No one in the class studied more then 5 hours