headache in patients belare use to test the effectiveness of the headache medici
ID: 3318061 • Letter: H
Question
headache in patients belare use to test the effectiveness of the headache medicine? a) Independent samples b) Dependent or paired samples 4. (3 Pts) When testing a claim that two populations have different means, a P-value of 0.004 is obtained. Using a 1% significance level, is H. rejected or not rejected? 5. (3 pts) Using the result in the previous question, select which of the following is correct The data provides sufficient evidence to support the claim a) b) The data does not provide sufficient evidence to support the claim 6. (3 Pts) When testing a hypothesis of a population proportion, what assumption is met when the Choose the number of successes, x and the number of failures, (n- x) are both greater than 5 correct statement a) The sample came from a normal population b) The sampling distribution of the sample proportion is approximately a normal distribution. 7. (3 Pts) An article in a newspaper claims that the proportion of traffic accidents involving road rage is higher this year than last year's proportion of 15%. Determine the null and alternate hypothesis you would use to test this claim. Is this a right tail, left tail, or two-tailed test? Ho: Ha: 8. (4 Pts) Determine the null and alternate hypothesis you would use to test the claim that the mean braking distance of four-cylinder cars is greater than the mean braking distance of six-oylinder cars Ho Ha: Page 1 of 6Explanation / Answer
Question 4
Answer :
P-value (0.004) is less than 1% significance level.
H0 rejected.
Question 5
Answer :
a) The data provides sufficient evidence to support the claim.
Question 6
Answer :
b) The sampling distribution of the sample proportion is approximately a normal distribution.
Question 7
Answer :
Right tailed test
H0 : P <= 0.15
Ha : P > 0.15
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