It’s 25/6 exact form 4.16 decimal form and 4 1/6 mixed number form
I think it would be 13 hours possibly
Answer:
100÷2= 50
Step-by-step explanation:
Because if we divide a 100 equally by 2 it will be 50
Using the z-distribution, the test statistic is:
c) -2.63.
<h3>What are the hypothesis tested?</h3>
At the null hypothesis we test if the means are equal, equivalent to a subtraction of 0, hence:

At the alternative hypothesis, we test if they are different, hence:

<h3>What are the mean and the standard error for the distribution of differences?</h3>
For each sample, they are given as follows:
.
.
For the distribution of differences, it is given by:
.
<h3>What is the test statistic?</h3>
The test statistic is given by:

In which
is the value tested at the null hypothesis.
Hence:


z = -2.63.
More can be learned about the z-distribution at brainly.com/question/13873630
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