B.E.031 My Notes Ask Your Teache The paint used to make lines on roads must refl
ID: 3364213 • Letter: B
Question
B.E.031 My Notes Ask Your Teache The paint used to make lines on roads must reflect enough light to be c consideration. A test of H0: = 20 versus of the following situations? (Round your P.values to three decimal places.) learly visible at night. Let denote the true average reflectometer reading for a new type of paint under appropriate in each Hai > 20 will be based on a random sample of size n from a normal population distribution, what conclusion is (a) n-13, t= 3.1, -0.05 P-value 0.005 State the conclusion in the problem context. Reject the null hypothesis. There is not sufficient evidence to conclude that the new paint has a reflectometer - Do not reject the null hypothesis. There is sufficient evidence to conclude that the new paint has a ref ectometer reading higher than 20 O Reject the null hypothesis. There is sufficient evidence to conclude that the new paint has a reflectometer reading higher than 20. O Do not reject the null hypothesis. There is not sufficient evidence to conclude that the new paint has a reflectometer reading higher than 20. (b) n-8, t " 1.6, = 0.01 P-value 0.077 State the conclusion in the problem context Reject the null hypothesis. There is sufficient evidence to conclude that the new paint has a reflectometer reading higher than 20. Do not reject the null hypothesis. There is sufficient evidence to conclude that the new paint has a reflectometer reading higher than 20 O Do not reject the null hypothesis. There is not sufficient evidence to conclude that the new paint has a reflectometer reading higher than 20. Reject the null hypothesis. There is not sufficient evidence to conclude that the new paint has a reflectometer reading higher than 20.Explanation / Answer
c) Degrees of freedom = n - 1 = 23 - 1 = 22
Hence,
For a right tailed test with 22 degrees of freedom, the p - value will be:
p - Value = P(t > -0.5) = 0.689
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