Answer:
11/15 is greater
Step-by-step explanation:
nearest 1000: 920,000
nearest 100: 919,800
nearest 10 (you said 100 but I think you mean 10): 919,830
2x-14=x-2 subtract x from both sides
x-14=-2 add 14 to both sides
x=12
hope this helps
Answer:
The value of the test statistic is z = -0.877.
Step-by-step explanation:
Testing the difference in mean time spent on housework between husbands and wives.
At the null hypothesis, we test if there is no difference, that is, the subtraction of the means is 0:

At the alternate hypothesis, we test if there is a difference, that is, the subtraction of the means is different from 0.

The test statistic is:

In which X is the sample mean,
is the value tested at the null hypothesis, and s is the standard error.
0 is tested at the null hypothesis:
This means that 
For the wives the mean was 7 hours/week and for the husbands the mean was 4.5 hours/week. The standard deviation of the differences in time spent on house work was 2.85.
This means that 
What is the value of the test statistic for testing the difference in mean time spent on housework between husbands and wives?



The value of the test statistic is z = -0.877.
The answer is D. You can't make an equation out of this!
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