<span>A medical researcher wants to investigate the amount of time it takes for patients' headache pain to be relieved after taking a new prescription painkiller. She plans to use statistical methods to estimate the mean of the population of relief times. She believes that the population is normally distributed with a standard deviation of 18 minutes. How large a sample should she take to estimate the mean time to within 4 minutes with 97% confidence?
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n = [z*s/E]^2
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n = [2.17*18/4]^2 = 96 when rounded up
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Answer:
21+48=69 thats proof
Step-by-step explanation:
moo
To make the second gear aligned with the first it would have to rotate 5 times, a total of 120 seconds and/or 2 minutes will pass
So the answer is I.
Answer:
C There is a 5 percent chance that the distribution of colors is the same for the different types of candies.
Step-by-step explanation:
The null hypothesis ; H0 : there is no difference in distribution of color for the different types of candies
Alternative hypothesis ; H1 : there is difference in the distribution of color for the different types of candies
When the Pvalue is < or = α ; we reject the null;
Here, the Pvalue and α = 0.05 ; hence, we reject the null.
A Pvalue of 0.05 means that there is only a 5% chance that the null is correct. That is ; There is only a 5 percent chance that the distribution of colors is the same for the different types of candies
