Using the z-distribution, the p-value would be given as follows:
b) 0.0086.
<h3>What are the hypothesis tested?</h3>
At the null hypothesis we test if the means are equal, hence:

At the alternative hypothesis, it is tested 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:
Hence, for the distribution of differences, they are 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.
Using a z-distribution calculator, for a two-tailed test, with z = -2.63, the p-value is of 0.0086.
Hence option B is correct.
More can be learned about the z-distribution at brainly.com/question/13873630
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Answer:
iters and millimets
Step-by-step explanation:
Ur welcome:)
Answer = 70 girls
Firstly, turn 56% into a decimal
56 / 100 = 0.56
Afterwards, multiply that by the number of girls
0.56 x 126 = 70.56
It would be 70 girls bc you can’t have 70 and a half girls.
Answer:
2 2/3
Step-by-step explanation:
4 × 2/3
4/1 × 2/3
8/3
2 2/3