Abs:
a)left tailed test
p-value=P(z<-1.41)=normsdist(-1.41)=0.0793
b)Two tailed test
p-value=2*P(z<-1.41)=2*normsdist(-1.41)=0.1585
(20 points) (a) Find the P - value for the test statistic z = -1.41 for the following null and alternative hypotheses:...
Find the P - value for the test statistic ?=2.74z=2.74 for the following null and alternative hypotheses: ?0H0: The population mean is 5. ??Ha: The population mean is less than 5. The P - value is (b) Find the P - value for the test statistic ?=2.74z=2.74 for the following null and alternative hypotheses: ?0H0: The population mean is 5. ??Ha: The population mean is not equal to 5. The P - value is These are both one question for...
(1 point) (a) Find the P - value for the test statistic z=−1.15 for the following null and alternative hypotheses : H0: The population mean is 10. Ha: The population mean is less than 10. The P - value is .1251 (b) Find the P - value for the test statistic z=−1.15 for the following null and alternative hypotheses: H0: The population mean is 10. Ha: The population mean is not equal to 10. The P - value is
(1 point) (a) Find the P-value for the test statistic z = 2.7 for the following null and alternative hypotheses: Ho: The population mean is 18. H,: The population mean is less than 18. The P-value is (b) Find the P-value for the test statistic z = 2.7 for the following null and alternative hypotheses: Ho: The population mean is 18. H,: The population mean is not equal to 18. The P-value is
For the folowing claim, find the null and alternative hypotheses, test statistic, critical value, and draw a conclusion. Assume that a simple random sample has been selected from a normally distributed population. Answer parts a-d. Claim: The mean IQ score of statistics professors is less than 119. Sample data: n 11, x 117, s 14. The significance level is ?-005 Click the icon to view a table of critical t-values. a. Choose the correct null hypothesis (Ho) and altenative hypothesis...
Identify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final conclusion that addresses the original claim. A test of sobriety involves measuring the subject's motor skills. A study of n = 20 randomly selected sober subjects take the test and produce a mean score of X = 41.0, and we know that o = 3.7. At the 0.01 level of significance, test the claim that the true mean score for all sober subjects is...
State the appropriate null and alternative hypotheses.
Find the test statistic and P-value.
And State the conclusion in the problem context.
To investigate the fluid mechanics of swimming, twenty swimmers each swam a specified distance in a water-billed pool and in a pool where the water was thickened with food grade guar gum to create a syrup-like consistency. Velocity, in meters per second, was recorded and the results are given in the table below. Swimmer Velocity (m/s) Water Guar Syrup...
Test the given claim. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, and then state the conclusion about the null hypothesis, as well as the final conclusion that addresses the original claim. Among 2026 passenger cars in a particular region, 236 had only rear license plates. Among 330 commercial trucks, 50 had only rear license plates. A reasonable hypothesis is that commercial trucks owners violate laws requiring front license plates at a higher rate than owners of passenger cars....
Question 13 20 pts Identify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final conclusion that addresses the original claim. Various temperature measurements are recorded at different times during the summer in Holtville on n-60 days. The mean of 8 = 100°F is obtained, with 0 - 10°F. Using the 0.05 significance level, test the claim that the mean temperature is over 995 Hop-100; Hy w 100. Test statistic: 2-0.77. P-value: 0.7794. Because the...
6.58 Computing the P-value. A test of the null hypothesis Ho: u Mo gives test statistic z = 1.89. (a) What is the P-value if the alternative is Ha: le > Mo? (b) What is the P-value if the alternative is Ha: j < Mo? (c) What is the P-value if the alternative is Ha: u € uo?
Given the following null and alternative hypotheses, the test statistic from the sample data is z=1.875z=1.875. If the significance level of 0.05 which results in a critical value of 1.645, what is the conclusion as it relates to the null hypothesis? H0:p=0.22 H1:p>0.22 Fail to reject the alternative hypothesis Reject the null hypothesis Fail to reject the null hypothesis Support the null hypothesis