Answer:
Decimal Form:
Step-by-step explanation:
Remove Parentheses:
Multiply the numbers:
Divide both sides by:
Simplify:
Hope I helped. If so, may I get brainliest and a thanks?
Thank you, have a good day! =)
Heres my question: A water park keeps track of the number of times each visitor goes down water slides during their visit . The
data shows the number of times 12 visitors went down a water slide.
4, 22, 16, 10, 11, 20, 20, 12, 6, 3, 11, 1
Create a histogram of this data.
To create a histogram, hover over each age range on the x-axis. Then click and drag up to plot the data. um so yea thats my question, if u have answers to it please reply to me! thanks! :)
4, 22, 16, 10, 11, 20, 20, 12, 6, 3, 11, 1
Create a histogram of this data.
To create a histogram, hover over each age range on the x-axis. Then click and drag up to plot the data. um so yea thats my question, if u have answers to it please reply to me! thanks! :)
1 answer:
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Answer:
The p-value of the test statistic is 0.2019.
Step-by-step explanation:
Test if there is evidence at the 0.02 level that the medicine relieves pain in more than 384 seconds.
At the null hypothesis, we test if it relieves pain in at most 384 seconds, that is:
At the alternative hypothesis, we test if it relieves pain in more than 384 seconds, that is:
The test statistic is:
In which X is the sample mean, is the value tested at the null hypothesis,
is the standard deviation and n is the size of the sample.
384 is tested at the null hypothesis:
This means that
For a sample of 41 patients, the mean time in which the medicine relieved pain was 387 seconds. Assume the population standard deviation is 23.
This means that
Value of the test statistic:
P-value of the test:
The p-value of the test is the probability of finding a sample mean above 387, which is 1 subtracted by the p-value of z = 0.835.
Looking at the z-table, z = 0.835 has a p-value of 0.7981.
1 - 0.7981 = 0.2019
The p-value of the test statistic is 0.2019.