A random sample of 20 observations showed a standard deviation of 8. At 95% confidence, test to see if the variance of the population is significantly less than 65. State the null and alternative hypotheses.
Select one:
A. H_{0}: ^{2} 65 H_{a}: ^{2} > 65
B. H_{0}: ^{2} 65 H_{a}: ^{2} < 65
C. H_{0}: ^{2} = 65 H_{a}: ^{2} 65
D. None of the above answers is correct
TOPIC:Null and alternative hypothesis for the given test.
(The null and alternative hypothesis should be disjoint and exhaustive).
A random sample of 20 observations showed a standard deviation of 8. At 95% confidence, test...
STATISTICS. CONFIDENCE REGIONS. Let be a simple random sample of the density , . Find a confidence interval of 95% for the mean of the population.. Thank you for your explanations. We were unable to transcribe this imageWe were unable to transcribe this imageWe were unable to transcribe this imageWe were unable to transcribe this image
STATISTICS. REGIONS OF CONFIDENCE Let be a simple random sample (n) of the density , Find the confidence interval of 95% for the variance of the population. Thank you for your explanations. We were unable to transcribe this imageWe were unable to transcribe this imageWe were unable to transcribe this image
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parts A-D please and thx The data for a random sample of 8 paired observations are shown in the table to the right. a. What are the appropriate null and alternative hypotheses to test whether the mean for population 2 is larger than that for population 1? b. Conduct the test identified in part a using a= 0.05. c. Find a 95% confidence interval for Interpret this result. d. What assumptions are necessary to ensure the validity of this analysis?...
The null and alternate hypotheses are: H0:µ1≤µ2. H0:µ1>µ2. A random sample of 29 items from the first population showed a mean of 112 and a standard deviation of 9. A sample of 15 items for the second population showed a mean of 97 and a standard deviation of 12. Use the .01 significance level. a. Find the degrees of freedom for unequal variance test b. State the decision rule for .1 significance level c. Compute the value of the test...
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The data for a random sample of 8 paired observations are shown in the table to the right. Pair Population 1 53 37 24 Population 2 58 39 25 61 53 38 38 39 a. What are the appropriate null and alternative hypotheses to test whether the mean for population 2 is larger than that for population 1? b. Conduct the test identified in part a using α 0.01 c. Find a 99% confidence interval for μd. Interpret this result....