What is the effect on the P-value when a test is changed from a two-tailed hypothesis...
What is the effect on the P-value when a test is changed from a two-tailed hypothesis with equal and not equal to to a one-tailed hypothesis such as > or <?
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Homework Answers
Solution :
For one tailed test p value is doubled the two sided test .
b)
The P-value is cut in half.
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What is the effect on the P-value when a test is changed from a
two-tailed hypothesis...
(a) For the same data and null hypothesis, is the P-value of a one-tailed test (right...
(a) For the same data and null hypothesis, is the P-value of a one-tailed test (right or left) larger or smaller than that of a two-tailed test? pick one The P-value for a one-tailed test is smaller because the two-tailed test includes the area in both tails. The P-value for a one-tailed test is larger because the two-tailed test includes the area in only one tail. The P-value for a one-tailed test is larger because the two-tailed test includes the...
QUESTION 1 Practice with the p-value Calculator: What is the p value for a two-tailed test...
QUESTION 1 Practice with the p-value Calculator: What is the p value for a two-tailed test given a t-value of 1.08 and sample size of 50? A. .1427 B..2854 C..8573 QUESTION 2 Practice with the p-value Calculator: What is the p value for a left-tailed test given a t-value of 1.08 and sample size of 50? A. .1427 B.2854 C..8573 QUESTION 3 Match the symbolic terms with its proper name. - Alternative Hypothesis Null Hypothesis - This is not an...
What is the p-value of a two-tailed one-mean hypothesis test, with a test statistic of z0=−1.73?...
What is the p-value of a two-tailed one-mean hypothesis test, with a test statistic of z0=−1.73? (Do not round your answer; compute your answer using a value from the table below.) z−1.8−1.7−1.6−1.5−1.40.000.0360.0450.0550.0670.0810.010.0350.0440.0540.0660.0790.020.0340.0430.0530.0640.0780.030.0340.0420.0520.0630.0760.040.0330.0410.0510.0620.0750.050.0320.0400.0490.0610.0740.060.0310.0390.0480.0590.0720.070.0310.0380.0470.0580.0710.080.0300.0380.0460.0570.0690.090.0290.0370.0460.0560.068
The Critical Value changes as we move from a two-tailed hypothesis test to a one-tailed test....
The Critical Value changes as we move from a two-tailed hypothesis test to a one-tailed test. Group of answer choices True False
Multiple Choice: Question #1 A two tailed hypothesis test is being used to evaluate a treatment...
Multiple Choice: Question #1 A two tailed hypothesis test is being used to evaluate a treatment effect with ( a = .05). if the sample data produce a Z-score of ( z= -2.24), what is the correct decision? A. Reject the null hypothesis and conclude that the treatment has no effect B. Reject the null hypothesis and conclude that the treatment has an effect C. Fail to reject the null Hypothesis and conclude that the treatment has no effect D....
Question 4 1 pts Classify the hypothesis test as left-tailed, right-tailed, or two-tailed. In 1990, the...
Question 4 1 pts Classify the hypothesis test as left-tailed, right-tailed, or two-tailed. In 1990, the average duration of long-distance telephone calls originating in one town was 7.2 minutes. A long-distance telephone company wants to perform a hypothesis test to determine whether the average duration of long-distance phone calls has changed from the 1990 mean of 7.2 minutes Right-tailed Two-tailed O Left-tailed
For a one-tailed hypothesis test, the computed test statistic is z= 2.65. What is the p-value?
For a one-tailed hypothesis test, the computed test statistic is z= 2.65. What is the p-value?
A. Critical Values for Hypothesis Tests (o known) a) For an upper tailed hypothesis test when...
A. Critical Values for Hypothesis Tests (o known) a) For an upper tailed hypothesis test when a = .0197, then 2 = b) For a two-tailed hypothesis test when a = 0.0104, then 2a/2= c) For a lower-tailed hypothesis test when a = 0.0132, then-Za = B. Critical Values for Hypothesis Tests (o unknown) a) For an upper tailed hypothesis test at 27 d.f. and a = .025, then ta = b) For a two-tailed hypothesis test at 58 d.f....
Determine a left-tailed, right-tailed, or two-tailed test from a given null and alternative hypothesis. David hypothesize that...
Determine a left-tailed, right-tailed, or two-tailed test from a given null and alternative hypothesis. David hypothesize that the average age of the population of Wyoming is less than 45 years. David records a sample mean equal to 42 and states the hypothesis as = 45 vs < 45. Select the best description for this type of test. a.) Two-tailed test b.) Left-tailed test c.) Upper-tailed test d.) Right-tailed test
All things being equal, when we have a two-tailed Alternative Hypothesis test it is easier to reject the Null Hypothesis...
All things being equal, when we have a two-tailed Alternative Hypothesis test it is easier to reject the Null Hypothesis (when compared to a one-tailed test). True False
QUESTION 1 Practice with the p-value Calculator: What is the p value for a two-tailed test given a t-value of 1.08 and sample size of 50? A. .1427 B..2854 C..8573 QUESTION 2 Practice with the p-value Calculator: What is the p value for a left-tailed test given a t-value of 1.08 and sample size of 50? A. .1427 B.2854 C..8573 QUESTION 3 Match the symbolic terms with its proper name. - Alternative Hypothesis Null Hypothesis - This is not an...
Question 4 1 pts Classify the hypothesis test as left-tailed, right-tailed, or two-tailed. In 1990, the average duration of long-distance telephone calls originating in one town was 7.2 minutes. A long-distance telephone company wants to perform a hypothesis test to determine whether the average duration of long-distance phone calls has changed from the 1990 mean of 7.2 minutes Right-tailed Two-tailed O Left-tailed
A. Critical Values for Hypothesis Tests (o known) a) For an upper tailed hypothesis test when a = .0197, then 2 = b) For a two-tailed hypothesis test when a = 0.0104, then 2a/2= c) For a lower-tailed hypothesis test when a = 0.0132, then-Za = B. Critical Values for Hypothesis Tests (o unknown) a) For an upper tailed hypothesis test at 27 d.f. and a = .025, then ta = b) For a two-tailed hypothesis test at 58 d.f....
Determine a left-tailed, right-tailed, or two-tailed test from a given null and alternative hypothesis. David hypothesize that the average age of the population of Wyoming is less than 45 years. David records a sample mean equal to 42 and states the hypothesis as = 45 vs < 45. Select the best description for this type of test. a.) Two-tailed test b.) Left-tailed test c.) Upper-tailed test d.) Right-tailed test
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