So basically you have to: highlight all of the words that can be used to describe the following expression in another color. Sor
ry if the pic is a little blurry but I really need help with this!!! I highlighted some of them already. Plssss
1 answer:
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Using the z-distribution, as we have the standard deviation for the population, to test the hypothesis, it is found that this is evidence that workers in the large city take longer than 28 minutes to get home from work.
<h3>What are the hypothesis tested?</h3>At the null hypothesis, it is tested if the mean time is of 28 minutes, that is:
At the alternative hypothesis, it is tested if the mean time is greater than 28 minutes, that is:
.
The test statistic is given by:
The parameters are:
is the sample mean.
is the value tested at the null hypothesis.
is the standard deviation of the sample.
- n is the sample size.
In this problem, the values of the parameters are given by:
Hence:
Considering that we have a <em>right-tailed test</em>, as we are testing if the mean is greater than a value, with a standard <em>significance level of 0.05</em>, the critical value is of .
Since the test statistic is greater than the critical value, it is found that this is evidence that workers in the large city take longer than 28 minutes to get home from work.
To learn more about the z-distribution, you can check brainly.com/question/26454209
Answer:
9π ft²
Step-by-step explanation:
translate to math this is asking you to find the area of HALF of a circle with a diameter of 6 feet.
find the radius, half of the diameter, 3 feet
area of a circle is pi times the radius squared