Needing help with these questions Page 491 #22 (a) Write the appropriate hypotheses for this test....
1. Conduct a test of the null hypothesis that the mean height for all students in the Census at School database is equal to 155 cm vs the alternative that the mean Height is greater than 155 cm. Use a significance level of 0.05. a. State the null and alternative hypotheses. Ho: m = 155 Ha: m > 155 b. Provide the Statcrunch output table. Hypothesis test results: Variable Sample Mean Std. Err. DF T-Stat P-value Height 159.86 1.7311103 49...
distributed Use a t-test to test the claim about the population mean ji at the given level of significance a using the given sample statistics. Assume the population is normally Claim: #26; a=0.10 Sample statistics: X = 26.5, s=4.3, n = 11 What are the null and alternative hypotheses? Choose the correct answer below O A. Ho +26 OB. Ho: 226 H, = 26 H <26 OCH p=26 OD. HY S 26 H, #26 H>26 What is the value of...
Luoston help The test statistic of z = 2.12 is obtained when testing the claim that p#0.688. a. Identify the hypothesis test as being two-tailed, left-tailed, or right-tailed. b. Find the P-value. c. Using a significance level of a = 0.01, should we reject Hy or should we fail to reject Ho? Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table a. This is a...
Use technology and a t-test to test the claim about the population mean p at the given level of significance using the given sample statistics. Assume the population is normally distributed Claim je> 70, a = 0.10 Sample statistics. x=71,3,5 = 29, n. 23 What are the null and alternative hypotheses? Choose the correct answer below. O A. Ho #70 OB. Hy 270 HAN= 70 HAR < 70 O C. W, 70 OD. H 570 HA #70 HA 70 What...
the accompanying sample information conduct the appropriate hypothesis test using the p-value i The sample information -X Sample 1 Sample 2 proport less than the proportion of pe n = 120 X1 = 40 n2 = 124 x2 = 55 Print Done Given the null and alternative hypotheses below, a level of significance a=0.1, together with the accompanying sample in hypothesis Ho: P2P2 HAPA <P2 Click on the icon to view the sample information Determine the value of the test...
For each problem, state the null and alternative hypotheses with the appropriate notation. Then test the hypothesis at the given significance level. Lastly state your conclusion using a complete sentence. Be sure to include the p-value in your conclusion. 1. suppose it is reported that 35% of collage students smoke tobacco regularly. We are curios as to whether a higher proportion of auraria campus students smoke regularly. So we sample 150 students and find that 70 smoke. Test your hypothesis...
A professor wishes to test a claim that the mean test score of her first class is lower than the mean test score of her second class. A random sample of size 27 with a mean of 65.7 and a standard deviation of 5.4 is selected from her first class. A random sample of size 20 with a mean of 69.5 and a standard deviation of 12.1 is selected from her second class. Assume that test scores in both classes...
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An article in a journal reports that 34% of American fathers take no responsibility for child care. A researcher claims that the figure is higher for fathers in the town of Littleton. A random sample of 225 fathers from Littleton yielded 90 who did not help with child care. Is there enough evidence to support the claim using a 4% level of significance? Enter the Null Hypothesis for...
A college entrance exam company determined that a score of 22 on the mathematics portion of the exam suggests that a student is ready for college-level mathematics. To achieve this goal, the company recommends that students take a core curriculum of math courses in high school. Suppose a random sample of 150 students who completed this core set of courses results in a mean math score of 22.4 on the college entrance exam with a standard deviation of 3.8. Do...
This Question: 10 pts 16 of 28 (10 complete) The Test 280 pts possible Question Help the P e Assume that the samples were obtained independently Conduct the following test at the 2005 level of significance by determining (a) the null and alternative hypotheses, (b) the test statistic, and using simple random sampling Test whether , Sample data are x - 30. - 255., 36, and n = 301 (a) Determine the null and alternative hypotheses Choose the correct answer...