<h2>
Answer with explanation:</h2>
Let be the population mean.
As per given we have,
, since alternative hypothesis is right tailed , so the test is a right-tailed test.
Test statistic :
For, n=80 , we have
Critical z-value at =1.645
Since the test statistic value is greater than the critical z-value, so we reject the null hypothesis, i.e. alternative hypothesis is accepted.
Conclusion: We have enough evidence to support the claim that the mean work week has increased for women at the 5% level.
Answer:
1/6
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
took test
Answer:
C) -7/3
Step-by-step explanation:
m=(y2-y1)/(x2-x1)
m=(9-(-5))/(-2-4)=(9+5)/-6=14/-6
simplify -14/6 to -7/3
Answer:
Peter should join <u>Lab thinkers</u> to receive a better deal.
Science buddies costs <u>190$</u> for six months.
Lab thinkers costs <u>170$</u> for six months.
Step-by-step explanation:
The equations are...
Science buddies: 10+30x -> 10+30(6)=190
Lab thinkers: 45+25x -> 45+25(6)=170
Peter saves 20$ if he chooses lab thinkers.
Sorry for my mistake, this is my new edit.