Questions
Questions

BTRY3010/BTRY5010/STSCI2200/STSCI5200 Lecture #26 Pages ( 126 - 129, 134 )

Short answer

Using a 0.04 significance level, you are testing the following hypotheses about a mean: H0: šœ‡ = 15.05 H1: šœ‡ > 15.05 You take a sample of size 79. Assuming that all assumptions are met, you would reject the null hypothesis if the test statistic t is greater than _____. What number goes in the blank? If the question can not be answered, enter 0. c08.p079.q010

View Explanation

View Explanation

Verified Answer
Please login to view
Step-by-Step Analysis
We are conducting a one-sided t-test for the mean with H0: μ = 15.05 and H1: μ > 15.05 at a significance level α = 0.04. First, determine the appropriate degrees of freedom. With a sample size of n = 79, the t distribution used for t......Login to view full explanation

Log in for full answers

We've collected overĀ 50,000 authentic exam questionsĀ andĀ detailed explanationsĀ from around the globe. Log in now and get instant access to the answers!

Similar Questions

Sulfur dioxide (SO2) emission rates from factories can typically range from 0 to 0.05 parts per million (ppm), but can go even higher in poorly performing factories. EPA officials decide to monitor a random sample of 40 GA factories on a single day in January. Which of the following statistical tests would be appropriate to determine if the average SO2 emission rates of factories in GA differs than the EPA standards of 0.05 ppm?

Question at position 24 Research Scenario: A psychologist believes that college students at their university sleep fewer hours than the national average of 7 hours per night. They collect sleep data from a random sample of 10 students and calculate a sample mean of 6.2 hours. The standard deviation for the sample is 1.1 hours. The psychologist performs a hand calculation and calculates a t-statistic of -2.49. Assume alpha = .05. No need to show work or round any numbers. What kind of test should we run? Printed Blank[input]Question Blank 1 of 4[input] What is the df? Question Blank 2 of 4[input] What is the t-critical value? (look this up on your t-table) Question Blank 3 of 4[input] Should the psychologist reject or fail to reject the null? Printed Blank[input]Question Blank 4 of 4[input] dependent samples t-testz-testindependent samples t-test1-sample t-testfail to rejectreject

According to ABCDĀ in 3121, the average American spent $16,803 on housing. A suburban community wants to know if their residents spent less than this national average. In a survey of 30 residents, they found that they spent an annual average of $15,800 with a standard deviation of $2,600.Ā (Ā  š›¼ =0.005 ) The hypothesis for this [ Select ] left-tailed two-tailed right-tailed test would be: š» 0 : [ Select ] µ<15800 µ ≠115800 µ>16803 µ=16803 š» š‘Ž : [ Select ] µ≠15800 µ>15800 µ<16803 µ=16803 The possible decision rules for this test can be made using P-values or critical values. Using Critical Values, the [ Select ] null hypothesis alternative hypothesis is rejected if the test statistic is [ Select ] less greater than [ Select ] 2.33 -1.645 -1.96 -2.756 . Using P-values, the [ Select ] alternative hypthesis null hypothesis is rejected if the P-value is [ Select ] greater less than [ Select ] 0.05 0.10 0.01 0.005 . Using the [ Select ] prop.test T.Test chisq.test function in R, if we had the actual data, we would find that the point estimate ofĀ the mean amount a suburban community spend on housing isĀ  [ Select ] $16,803 $2,600 $15,800 30 , the test statistic is [ Select ] $2,600 0.005 .0217 -2.11 $15,800 , and the P-value is [ Select ] 3121 0.02166 0.005 -2.11 . Based on this analysis, we will decide to [ Select ] reject fail to reject the [ Select ] null alternative hypothesis.Ā  We [ Select ] have do not have evidence toĀ suggestĀ their residents spent less than this national average. c08.p080.q003 Ā  Ā 

Using a 0.05 significance level, you are testing the following hypotheses about a mean: H0: šœ‡ = 10.12 H1: šœ‡ > 10.12 You take a sample of size 70. Assuming that all assumptions are met, you would reject the null hypothesis if the test statistic t is greater than _____. What number goes in the blank? If the question can not be answered, enter 0. c08.p079.q009

More Practical Tools for International Students

Join us and instantly unlock extensive past papers & exclusive solutions to get a head start on your studies!