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Quantitative Usability, Statistics & Six Sigma by Jeff Sauro



Statistics Questions & Answers

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Showing Questions Taged with p-value :: Show All Questions

# QuestionHelpful RatingTags
424 There is an answer for this Question A recent article in a computer magazine suggested that the mean time to fully learn a new software program is 40 hours. A sample of 100 first-time users of a new statistics program revealed the mean time to learn it was 39 hours with the standard deviation of 8 hours. At the 0.05 significance level, can we conclude that users learn the package in less than a mean of 40 hours? a. State the null and alternate hypotheses. b. State the decision rule. c. Compute the value of the test statistic. d. Compute the p-value1-sample t-test, Alternative Hypothesis , Null Hypothesis , test statistic, p-value
311 Awaiting user Action...no answer posted yet A random sample of 100 pumpkins is obtained and the mean circumference is found to be 40.5 cm. Assuming that the population standard deviation is known to be 1.6 cm, use a 0.05 significance level to test the claim that the mean circumference of all pumpkins is equal to 39.9 cm. 1. State the null hypothese 2. state the alternative 3. Identify the test statistic 4. Find the P-value 5. What is the conclusion regarding the null hypothesis? 6. What is the final conclusion that addresses the original claim?p-value, Null Hypothesis , Alternative Hypothesis , Z-Statistic, t-statistic
261 Awaiting user Action...no answer posted yet If your hypothesis is not correct, can the data collected still be used within a subsequent analysis.Hypothesis Test, p-value