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Section 1-HT, Exercise 046
Use the normal distribution and the given sample results to complete the test of the given hypotheses. Assume the results come from a random sample and use a 5% significance level.
Test H0 : p =0.5 vs HA : p > 0.5 using the sample results P^ = 0.64 with n =25
Round your answer for the test statistic to two decimal places, and your answer for the p-value to three decimal places.
test statistic = (ENTER ANSWER HERE)
p-value = (Enter your answer)
Determine the decision rule for rejecting the null hypothesis, H0.
the mean of sample a is significantly different than the mean of sample b. sample a 59 41 74 62 87 73 sample b 53 67 85
Find the 90% confidence interval for the average 10-week weight for golden retriever puppies. Show/explain your work, and identify the following:
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A student scores 91 on the midterm exam for physics. Assume the class scores are normally distributed, with a mean of 65 and standard deviation of 15. Into what percentile does this student fall?
(a) What are the possible values of X? (b) What are the probabilities that X assumes each of these values?
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Point out your final decision concerning hypothesis test and compute p-value for test.
Which of the following does not explain a possible relationship between variables when the null hypothesis is rejected
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