The following information was obtained from independent random samples. Assume normally distributed populations with equal variances....
The following information was obtained from independent random samples. Assume normally distributed populations with equal variances. Sample 1 Sample 2 Sample Size 10 12 Sample Mean 52 51 Sample Variance 85 90 We are interested in testing H0: μSample 1 - μSample 2 = 0 Ha: μSample 1 - μSample 2 ≠ 0 Step 1 of 3: What is the value of the test statistic? Round your answer to four decimal places.
Homework Answers
The pooled estimator of the sample variance
=87.75
The pooled estimator of the sample standard
deviation=9.37
T test formula for mean difference.(Variances unknown and
equal)
=0.2493
Therefore, the value of the test statistic =0.2493
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The following information was obtained from independent random
samples. Assume normally distributed populations with equal
variances....
The following information was obtained from independent random samples. Assume normally populations with equal Sample 1...
The following information was obtained from independent random samples. Assume normally populations with equal Sample 1 Sample 2 12 Sample Size 10 Sample Mean 52 Sample Variance 85 We are interested in testing Hai sample 1 -Hsample 2 0 Step 2 of 3: Determine the p-value for the test. TablesKeypad Answer 1 Point Next Prev O p-value c 0.025 0.025< p-value <0.05 Op-value <0.1 。p-value > 0.2 None of the above o 2019 8 3 of 3 The following information...
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Please show your steps, thanks.
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The following information was obtained from independent random samples. Assume normally populations with equal Sample 1 Sample 2 12 Sample Size 10 Sample Mean 52 Sample Variance 85 We are interested in testing Hai sample 1 -Hsample 2 0 Step 2 of 3: Determine the p-value for the test. TablesKeypad Answer 1 Point Next Prev O p-value c 0.025 0.025< p-value <0.05 Op-value <0.1 。p-value > 0.2 None of the above o 2019 8 3 of 3 The following information...
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The information below is based on independent random samples taken from two normally distributed populations having equal variances. Based on the sample information, determine the 90% confidence interval estimate for the difference between the two population means. n1 = 17 x1 44 n2 13 x2 = 49 The 90% confidence interval is s(uI-12) (Round to two decimal places as needed.) «D
The difference of two independent normally distributed random
variables is also normally distributed. We have used this fact in
many of our derivations. Now, consider two independent and normally
distributed populations with unknown variances σ 2 X and σ 2 Y . If
we get a random sample X1, X2, . . . , Xn from the first population
and a random sample Y1, Y2, . . . , Yn from the second population
(note that both samples are of...
The information below is based on independent random samples taken from two normally distributed populations having equal variances. Based on the sample information, determine the 95% confidence interval estimate for the difference between the two population means. n1 14 x145 n2 13 2 47 The 95% confidence interval is s (μ1-12) s Round to two decimal places as needed)
Please show your steps, thanks.
The two samples below are independent from Normal populations with equal variances. Sample 1: Sample 2 18 13 381 8,289 4,471 t(x^2)= Question 2A Does the data indicate μ12μ2 at α-0.05?State the hypothesis in terms of 1-2. Step t H0: Ha: Step 2: Step 3 Fill in row 88 if the hypothesis is one tailed. Reject H0 i Fill in row 92 if the hypothesis is two tailed. The smaller number must be typed first....
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