Unless otherwise specified, what is μ1 – μ2 said to equal?
| a. |
1 |
|
| b. |
M1 – M2 |
|
| c. |
z |
|
| d. |
0 |
for the above question
μ1 – μ2 said to equal
if μ1 – μ2 =0
so the correct option is
d) 0
Unless otherwise specified, what is μ1 – μ2 said to equal? a. 1 b. M1 –...
40. In testing H0: μ1 − μ2 = 5 vs. Ha: μ1 − μ2 > 5, the test statistic value z is found to be 1.69. What is the p-value of the test? A: 0.0910 B: 0.0455 C: 0.3023 D: 0.1977 41. When testing H0: μ1 − μ2 = 0 vs. H1: μ1 − μ2 < 0, the observed value of the z-score was found to be −2.15. What would the p-value for this test be? A: 0.0316 B: 0.0158...
The null hypothesis for the independent-measures t-test states _____ A) M1 - M2 = 0 B) μ1 - μ2 ≠ 0 C) μ1 - μ2 = 0 D) M1 - M2 ≠ 0
Consider the following hypothesis test. H0: μ1 − μ2 = 0 Ha: μ1 − μ2 ≠ 0 The following results are for two independent samples taken from the two populations. Sample 1 Sample 2 n1 = 80 n2 = 70 x1 = 104 x2 = 106 σ1 = 8.4 σ2 = 7.2 (a) What is the value of the test statistic? (Round your answer to two decimal places.) (b) What is the p-value? (Round your answer to four decimal places.)...
The alternative hypothesis in ANOVA is A.) μ1 ≠ μ2 ≠ … ≠ μk B.) not all population means are equal C.) not all sample means are equal D.)
Ho: μ1 - μ2 = 0 Ha: μ1 - μ2 ≠ 0 When testing above hypotheses the test statistic t was found to be 5.15. If the degrees of freedom = 40, then, the p-value for this test would be Question options: a) less than zero b) between 0 and 0.5 c) less than .005 d) greater than 1
Consider the hypothesis test H0: μ1 = μ2 against H1: μ1 > μ2 with known variances σ1=10 and σ2=5. Suppose that sample sizes n1=10 and n2=15 and that x-bar1 = 24.5 and x-bar2 = 21.3. Use alpha = .01. Determine the confidence interval. a) =0 b) ≥2.78 c) ≥3.04 d) ≥-4.74
Consider the following hypothesis test. H0: μ1 − μ2 = 0 Ha: μ1 − μ2 ≠ 0 The following results are from independent samples taken from two populations. Sample 1 Sample 2 n1 = 35 n2 = 40 x1 = 13.6 x2 = 10.1 s1 = 5.9 s2 = 8.5 (a) What is the value of the test statistic? (Use x1 − x2. Round your answer to three decimal places.) (b) What is the degrees of freedom for the t...
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...
The null and alternate hypotheses are: H0 : μ1 = μ2 H1 : μ1 ≠ μ2 A random sample of 8 observations from Population 1 revealed a sample mean of 25 and sample deviation of 4.5. A random sample of 8 observations from Population 2 revealed a sample mean of 26 and sample standard deviation of 3.5. The underlying population standard deviations are unknown but are assumed to be equal. At the .05 significance level, is there a difference between...
You wish to test the following claim (H1H1) at a significance level of α=0.05α=0.05. Ho:μ1=μ2Ho:μ1=μ2 H1:μ1≠μ2H1:μ1≠μ2 You believe both populations are normally distributed, but you do not know the standard deviations for either. However, you have reason to believe that the variances of the two populations are equal. You obtain a sample of size n1=12n1=12 with a mean of M1=83.9M1=83.9 and a standard deviation of SD1=20.7SD1=20.7 from the first population. You obtain a sample of size n2=12n2=12 with a mean...