Question

Suppose we have taken independent, random samples of sizes n1 = 8 and n2 = 8...

Suppose we have taken independent, random samples of sizes n1 = 8 and n2 = 8 from two normally distributed populations having means µ1 and µ2, and suppose we obtain x¯1  = 227, x¯2  =  190 , s1 = 6, s2 = 6. Use critical values to test the null hypothesis H0: µ1 − µ2 < 27 versus the alternative hypothesis Ha: µ1 − µ2 > 27 by setting α equal to .10, .05, .01 and .001. Using the equal variance procedure, how much evidence is there that the difference between µ1 and µ2 exceeds 27? (Round your answer to 3 decimal places.) t = H0 at α = 0.1, 0.05, and, 0.01, evidence.

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Suppose we have taken independent, random samples of sizes n1 = 7 and n2 = 6...
Suppose we have taken independent, random samples of sizes n1 = 7 and n2 = 6 from two normally distributed populations having means µ1 and µ2, and suppose we obtain x¯1  = 240 , x¯2  =  208 , s1 = 5, s2 = 5. Use critical values to test the null hypothesis H0: µ1 − µ2 < 22 versus the alternative hypothesis Ha: µ1 − µ2 > 22 by setting α equal to .10, .05, .01 and .001. Using the...
Suppose we have taken independent, random samples of sizes n1 = 7 and n2 = 8...
Suppose we have taken independent, random samples of sizes n1 = 7 and n2 = 8 from two normally distributed populations having means µ1 and µ2, and suppose we obtain x¯1  = 229x¯1⁢  = 229, x¯2  =  190x¯2⁢  =⁢  190, s1 = 6, s2 = 6. Use critical values to test the null hypothesis H0: µ1 − µ2 < 28 versus the alternative hypothesis Ha: µ1 − µ2 > 28 by setting α equal to .10, .05, .01 and .001....
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 x¯1  = 240 , x¯2  =  210 , s1 = 5, s2 = 6. Use critical values to test the null hypothesis H0: µ1 − µ2 < 20 versus the alternative hypothesis Ha: µ1 − µ2 > 20 by setting α equal to .10, .05, .01 and .001. Using the...
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 x⎯⎯1= 240x¯1⁢  = 240 , x⎯⎯2=210x¯2⁢  =⁢  210 , s1 = 5, s2 = 6. Use critical values to test the null hypothesis H0: µ1− µ2 < 20 versus the alternative hypothesis Ha: µ1 − µ2 > 20 by setting α equal to .10, .05, .01 and .001. Using the...
Consider two independent random samples of sizes n1 = 14 and n2 = 10, taken from...
Consider two independent random samples of sizes n1 = 14 and n2 = 10, taken from two normally distributed populations. The sample standard deviations are calculated to be s1= 2.32 and s2 = 6.74, and the sample means are x¯1=-10.1and x¯2=-2.19, respectively. Using this information, test the null hypothesis H0:μ1=μ2against the one-sided alternative HA:μ1<μ2, using the Welch Approximate t Procedure (i.e. assuming that the population variances are not equal). a) Calculate the value for the t test statistic. Round your...
Suppose a sample of 49 paired differences that have been randomly selected from a normally distributed...
Suppose a sample of 49 paired differences that have been randomly selected from a normally distributed population of paired differences yields a sample mean of d⎯⎯=5.9 and a sample standard deviation of sd = 7.4. (a) Calculate a 95 percent confidence interval for µd = µ1 – µ2. Can we be 95 percent confident that the difference between µ1 and µ2 is greater than 0? (Round your answers to 2 decimal places.) Confidence interval = [ , ] ; (b)...
Suppose a sample of 49 paired differences that have been randomly selected from a normally distributed...
Suppose a sample of 49 paired differences that have been randomly selected from a normally distributed population of paired differences yields a sample mean d⎯⎯ =5.7 of and a sample standard deviation of sd = 7.4. (a) Calculate a 95 percent confidence interval for µd = µ1 – µ2. Can we be 95 percent confident that the difference between µ1 and µ2 is greater than 0? (Round your answers to 2 decimal places.) Confidence interval = [ , ] ;...
Independent random samples of sizes n1 = 201 and n2 = 205 were taken from two...
Independent random samples of sizes n1 = 201 and n2 = 205 were taken from two populations. In the first sample, 174 of the individuals met a certain criteria whereas in the second sample, 177 of the individuals met the same criteria. Test the null hypothesis H0:p1=p2versus the alternative hypothesis HA:p1>p2. a)  Calculate the z test statistic, testing the null hypothesis that the population proportions are equal. Round your response to at least 3 decimal places.      b) What is the...
Independent random samples of sizes n1 = 407 and n2 = 307 were taken from two...
Independent random samples of sizes n1 = 407 and n2 = 307 were taken from two populations. In the first sample, 118 of the individuals met a certain criteria whereas in the second sample, 163 of the individuals met the same criteria. Test the null hypothesis H0:p1=p2versus the alternative hypothesis HA:p1≠p2. What is the value of the z test statistic, testing the null hypothesis that the population proportions are equal? Round your response to at least 2 decimal places.
In order to compare the means of two normal populations, independent random samples are taken of...
In order to compare the means of two normal populations, independent random samples are taken of sizes n1 = 400 and n2 = 400. The results from the sample data yield: Sample 1 Sample 2 sample mean = 5275 sample mean = 5240 s1 = 150 s2 = 200 To test the null hypothesis H0: µ1 - µ2 = 0 versus the alternative hypothesis Ha: µ1 - µ2 > 0 at the 0.01 level of significance, the most accurate statement...