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23) Suppose you want to test the claim that u1 u2. Two samples are randomly selected...
Suppose you want to test the claim that µ1 < µ2. Two samples are randomly selected...
Suppose you want to test the claim that µ1 < µ2. Two samples
are randomly selected from each population. The sample statistics
are given below. At a level of significance of α = 0.05, when
should you reject H0?
n1 = 35
n2 = 42
x̅1 = 29.05 x̅2 =
31.6
s1 =
2.9
s2 = 2.8
Suppose you want to test the claim that u1<p2. Two samples are randomly selected from each population. The sample statistics are given...
24) Suppose you want to test the claim that H1> H2. Two samples are randomly selected...
24) Suppose you want to test the claim that H1> H2. Two samples are randomly selected from each population. The sample statistics are given below. At a level of significance of a = 0.10, when should you reject Ho? (8.1) n2 = 42 ni = 35 x1 = 29.23 $1= 2.9 x2 = 31.78 S2 = 2.8 A) Reject Ho if the standardized test statistic is more than 1.645. B) Reject Ho if the standardized test statistic is more than...
22) Suppose you want to test the claim that μ1 > μ2. Two samples are randomly...
22) Suppose you want to test the claim that μ1 > μ2. Two samples are randomly selected from each population. The sample statistics are given below. At a level of significance of α = 0.10, find the test statistic and determine whether or not to reject H0. (8.1) n1 = 35 n2 = 42 x1 = 33 x2 = 31 s1 = 2.9 s2 = 2.8 A) z = 3.06; Reject H0 and support the claim that μ1 > μ2...
Determine whether the claim stated below represents the null hypothesis or the alternative hypothesis. If a...
Determine whether the claim stated below represents the null hypothesis or the alternative hypothesis. If a hypothesis test is performed, how should you interpret a decision that (a) rejects the null hypothesis or (b) fails to reject the null hypothesis? A scientist claims that the mean incubation period for the eggs of a species of bird is at most at most 56 56 days. Does the claim represent the null hypothesis or the alternative hypothesis? Since the claim ▼ a...
Determine whether the claim stated below represents the null hypothesis or the alternative hypothesis. If a hypothesis test is performed, how should you interpret a decision that (a) rejects the n...
Determine whether the claim stated below represents the null hypothesis or the alternative hypothesis. If a hypothesis test is performed, how should you interpret a decision that (a) rejects the null hypothesis or (b) fails to reject the null hypothesis? A researcher claims that at most 17% of people had no health care visits in the past year. Does the claim represent the null hypothesis or the alternative hypothesis? Since the claim a statement of equality, it represents the V...
Suppose you want to test the claim that μ1 = μ2. Two samples are randomly selected...
Suppose you want to test the claim that μ1 = μ2. Two samples are randomly selected from normal populations. The sample statistics are given below. Assume that σ 2 over 1 ≠ σ 2 over 2 . At a level of significance α=0.01, when should you reject H0? n1 = 25 n2 = 30 1 = 21 2 = 19 s1 = 1.5 s2 = 1.9 A. Reject H0 if the standardized test statistic is less than -2.492 or greater...
(1 point) Test the claim that the two samples described below come from populations with the...
(1 point) Test the claim that the two samples described below come from populations with the same mean. Assume that the samples are independent simple random samples. Use a significance level of a = 0.05 Sample 1: n = 6, 11 = 25, $1 = 5.29 Sample 2: n2 = 17, I2 = 21.1, S2 = 5.84 (a) The degree of freedom is (b) The test statistic is (c) The final conclusion is A. We can reject the null hypothesis...
2 21) Suppose you want to test the claim that 1 > 12. Two samples are...
2 21) Suppose you want to test the claim that 1 > 12. Two samples are randomly selected from each population. The sample statistics are given below. At a level of significance of a = 0.01, when should you reject Ho? X1 - 690 51 = 45 ni =100 n2 - 125 X2675 52 25 A) Reject Ho if the standardized test statistic is greater than 1.645. B) Reject Ho if the standardized test statistic is greater than 2.33. C)...
Determine whether the claim stated below represents the null hypothesis or the alternative hypothesis. If a...
Determine whether the claim stated below represents the null hypothesis or the alternative hypothesis. If a hypothesis test is performed, how should you interpret a decision that (a) rejects the null hypothesis or (b) fails to reject the null hypothesis? A researcher claims that the standard deviation of the life of a certain type of lawn mower is at most 3.8 years. Does the claim represent the null hypothesis or the alternative hypothesis? Since the claim does not contain a...
(1 point) Test the claim that the two samples described below come from populations with the...
(1 point) Test the claim that the two samples described below come from populations with the same mean. Assume that the samples are independent simple random samples. Sample 1: n1 = 18, X1 = 20, $i = 5. Sample 2: n2 = 30, L2 = 15, S2 = 5. (a) The test statistic is (b) Find the t critical value for a significance level of 0.025 for an alternative hypothesis that the first population has a larger mean (one-sided test)....
Suppose you want to test the claim that µ1 < µ2. Two samples
are randomly selected from each population. The sample statistics
are given below. At a level of significance of α = 0.05, when
should you reject H0?
n1 = 35
n2 = 42
x̅1 = 29.05 x̅2 =
31.6
s1 =
2.9
s2 = 2.8
Suppose you want to test the claim that u1<p2. Two samples are randomly selected from each population. The sample statistics are given...
24) Suppose you want to test the claim that H1> H2. Two samples are randomly selected from each population. The sample statistics are given below. At a level of significance of a = 0.10, when should you reject Ho? (8.1) n2 = 42 ni = 35 x1 = 29.23 $1= 2.9 x2 = 31.78 S2 = 2.8 A) Reject Ho if the standardized test statistic is more than 1.645. B) Reject Ho if the standardized test statistic is more than...
Determine whether the claim stated below represents the null hypothesis or the alternative hypothesis. If a hypothesis test is performed, how should you interpret a decision that (a) rejects the null hypothesis or (b) fails to reject the null hypothesis? A researcher claims that at most 17% of people had no health care visits in the past year. Does the claim represent the null hypothesis or the alternative hypothesis? Since the claim a statement of equality, it represents the V...
(1 point) Test the claim that the two samples described below come from populations with the same mean. Assume that the samples are independent simple random samples. Use a significance level of a = 0.05 Sample 1: n = 6, 11 = 25, $1 = 5.29 Sample 2: n2 = 17, I2 = 21.1, S2 = 5.84 (a) The degree of freedom is (b) The test statistic is (c) The final conclusion is A. We can reject the null hypothesis...
2 21) Suppose you want to test the claim that 1 > 12. Two samples are randomly selected from each population. The sample statistics are given below. At a level of significance of a = 0.01, when should you reject Ho? X1 - 690 51 = 45 ni =100 n2 - 125 X2675 52 25 A) Reject Ho if the standardized test statistic is greater than 1.645. B) Reject Ho if the standardized test statistic is greater than 2.33. C)...
Determine whether the claim stated below represents the null hypothesis or the alternative hypothesis. If a hypothesis test is performed, how should you interpret a decision that (a) rejects the null hypothesis or (b) fails to reject the null hypothesis? A researcher claims that the standard deviation of the life of a certain type of lawn mower is at most 3.8 years. Does the claim represent the null hypothesis or the alternative hypothesis? Since the claim does not contain a...
(1 point) Test the claim that the two samples described below come from populations with the same mean. Assume that the samples are independent simple random samples. Sample 1: n1 = 18, X1 = 20, $i = 5. Sample 2: n2 = 30, L2 = 15, S2 = 5. (a) The test statistic is (b) Find the t critical value for a significance level of 0.025 for an alternative hypothesis that the first population has a larger mean (one-sided test)....
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