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:
i think b is you're answers
Answer:
72
Step-by-step explanation:
We know that it isn't a 90 degree angle so we do process of elimination, now we have 2 answers, just by looking at it is is probably 72. Hopefully you get it right.
Answer: I believe about 15-16%
Step-by-step explanation: yeah
Given knowledge:
{b+s=110}
{b=s+100}
Solving:
s+s+100=110
2s+100=110 (simplify)
2s=10 (subtract 100)
s=5 (divide by 2)
b+5=110
b=105 (subtract 5)