The following is a set of hypotheses, some information from one or more samples, and a...
The following is a set of hypotheses, some information from one
or more samples, and a standard error from a randomization
distribution.
Test H0 : μ1=μ2 vs Ha : μ1>μ2 when the samples have n1=n2=70,
x¯1=35.8, x¯2=32.8, s1=1.21, and s2=1.13. The standard error of
x¯1-x¯2 from the randomization distribution is 0.20 .
Find the value of the standardized z-test statistic.
Round your answer to two decimal places.
z= _______________
Thank You!
Homework Answers
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The following is a set of hypotheses, some information from one
or more samples, and a...
The following is a set of hypotheses, some information from one or more samples, and a...
The following is a set of hypotheses, some information from one or more samples, and a standard error from a randomization distribution. = n2 = 30,71 = 35.6,12 = 32.6, si = 1.25, and s2 = 1.14. The standard error of 11 - Āz from the Test Ho: My = Hy vs H, : > when the samples have n randomization distribution is 0.31. Find the value of the standardized z-test statistic. Round your answer to two decimal places. z=...
Question 5 0/1 The following is a set of hypotheses, some information from one or more...
Question 5 0/1 The following is a set of hypotheses, some information from one or more samples, and a standard error from a randomization distribution. Test H0 : p=0.53 vs Ha : p≠0.53 when the sample has n=70, and p^=0.42 with SE=0.06. Find the value of the standardized z-test statistic. Round your answer to two decimal places.
Chapter 5, Section 1, Exercise 012 Incorrect. The following is a set of hypotheses, some information...
Chapter 5, Section 1, Exercise 012 Incorrect. The following is a set of hypotheses, some information from one or more samples, and a standard error from a randomization distribution. Test Ho : ?? = ?2 vs Ha : ? > ?2 when the samples have n = n, = 40, ??35.7, x, = 33.1, s? = 1.24, and $2 1.11. The standard error of Ti from the randomization distribution is 0.26. Find the value of the standardized z-test statistic. Round...
a) Use the t-distribution to find a confidence interval for a difference in means μ1-μ2 given...
a) Use the t-distribution to find a confidence interval for a difference in means μ1-μ2 given the relevant sample results. Give the best estimate for μ1-μ2, the margin of error, and the confidence interval. Assume the results come from random samples from populations that are approximately normally distributed. A 90% confidence interval for μ1-μ2 using the sample results x¯1=8.8, s1=2.7, n1=50 and x¯2=13.3, s2=6.0, n2=50 Enter the exact answer for the best estimate and round your answers for the margin...
Independent random samples selected from two normal populations produced the sample means and standard deviations shown...
Independent random samples selected from two normal populations produced the sample means and standard deviations shown below: Sample 1 Sample 2 x̅1 = 5.4 x̅2 = 8.2 s1 = 5.6 s2 = 8.2 n1 = 20 n2 = 18 Conduct the test H0 : μ1 - μ2 = 0 against H1 : μ1 - μ2 ≠ 0 ,then the test statistic is __________.
Consider the following competing hypotheses and accompanying sample data drawn independently from normally distributed populations. (You...
Consider the following competing hypotheses and accompanying sample data drawn independently from normally distributed populations. (You may find it useful to reference the appropriate table: z table or t table) H0: μ1 − μ2 ≥ 0 HA: μ1 − μ2 < 0 x−1 x − 1 = 222 x−2 x − 2 = 253 s1 = 32 s2 = 26 n1 = 12 n2 = 12 a-1. Calculate the value of the test statistic under the assumption that the population...
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...
Suppose we have taken independent, random samples of sizes n1 = 7 and n2 = 7...
Suppose we have taken independent, random samples of sizes n1 = 7 and n2 = 7 from two normally distributed populations having means μ1 and μ2, and suppose we obtain x1=240, x2=210, s1=5, and s2 = 6 Use critical values and p-values to test the null hypothesis H0: μ1 − μ2 ≤ 20 versus the alternative hypothesis Ha: μ1 − μ2 > 20 by setting α equal to .10. How much evidence is there that the difference between μ1 and...
The following information was obtained from two indepen- dent samples selected from two normally distributed populations...
The following information was obtained from two indepen- dent samples selected from two normally distributed populations with unknown but equal standard deviations. n1 =21 x ̄=13.97 s1 =3.78 n2 =20 y ̄=15.55 s2 =3.26 Construct a 95% confidence interval for μ1 − μ2.
Perform the test of hypotheses indicated, using the data from independent samples given. Use the critical...
Perform the test of hypotheses indicated, using the data from independent samples given. Use the critical value approach. Compute the p-value of the test as well α. Test Ho : μι-μ2 = 3 vs. Ha : μι-μ2メ 3 @ α = 0.05 , ni = 35, z i = 25, si = 1 ,S2 b.Test Ho : μι-ㄣ--25 vs. Ha : μι-μ2 <-25 @ α = 0.10. ni = 85, 2:1 = 188, 81 = 15 n2 = 62,-2-2 15,...
The following is a set of hypotheses, some information from one or more samples, and a standard error from a randomization distribution. = n2 = 30,71 = 35.6,12 = 32.6, si = 1.25, and s2 = 1.14. The standard error of 11 - Āz from the Test Ho: My = Hy vs H, : > when the samples have n randomization distribution is 0.31. Find the value of the standardized z-test statistic. Round your answer to two decimal places. z=...
Chapter 5, Section 1, Exercise 012 Incorrect. The following is a set of hypotheses, some information from one or more samples, and a standard error from a randomization distribution. Test Ho : ?? = ?2 vs Ha : ? > ?2 when the samples have n = n, = 40, ??35.7, x, = 33.1, s? = 1.24, and $2 1.11. The standard error of Ti from the randomization distribution is 0.26. Find the value of the standardized z-test statistic. Round...
Perform the test of hypotheses indicated, using the data from independent samples given. Use the critical value approach. Compute the p-value of the test as well α. Test Ho : μι-μ2 = 3 vs. Ha : μι-μ2メ 3 @ α = 0.05 , ni = 35, z i = 25, si = 1 ,S2 b.Test Ho : μι-ㄣ--25 vs. Ha : μι-μ2 <-25 @ α = 0.10. ni = 85, 2:1 = 188, 81 = 15 n2 = 62,-2-2 15,...
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