solution :
(A) option B. The shaded area could be a p-value for a test with a two-tailed alternative hypothesis since both tails are of equal size.
(B) option D. The shaded area could not be a p-value because it does not include tail areas.
For each graph, indicate whether the shaded area could represent a p-value. Explain why or why...
(a) For the same data and null hypothesis, is the P-value of a one-tailed test (right or left) larger or smaller than that of a two-tailed test? pick one The P-value for a one-tailed test is smaller because the two-tailed test includes the area in both tails. The P-value for a one-tailed test is larger because the two-tailed test includes the area in only one tail. The P-value for a one-tailed test is larger because the two-tailed test includes the...
Explain what a P-value is. What is the criterion for rejecting the null hypothesis using the P-value approach? Explain what a P-value is. Choose the correct answer below. OA. A P-value is the probability of observing a sample statistic as extreme or more extreme than the one observed under the assumption that the statement in the null hypothesis is true B. A P-value is the number of standard deviations that the observed proportion is from the proportion stated in the...
The test statistic in a two-tailed test is z=0.34 Determine the P-value and decide whether, at the 10% significance level, the data provide sufficient evidence to reject the null hypothesis in favor of the alternative hypothesis. LOADING... Click here to view a partial table of areas under the standard normal curve. The P-value is nothing. (Round to four decimal places as needed.) This P-value ▼ sufficient evidence to reject the null hypothesis in favor of the alternative hypothesis because it...
Calculate the p-value for the following conditions and determine whether or not to reject the null hypothesis. a) one-tail (upper) test, zp-2.51, and α-0.10 b) one-tail (lower) test, zp--1 .34, and α: 0.05 c) two-tail test, Zp-_ 1.89, and α: 0.05 d) two-tail test, z1.58, and a 0.02 Click here to view the first page of the standard normal table, Click here to view the second page of the standard normal table. a) p-value (Round to four decimal places as...
The value obtained for the test statistic, z, in a one-mean 2-test is given. Whether the test is two tailed, left tailed, or right tailed is also specified. For parts (a) and (b). determine the P-value and decide whether, at the 1% significance level, the data provide sufficient evidence to reject the null hypothesis in favor of the alternative hypothesis. a. The test statistic in a two-tailed test is z= -1.42. The P-value is (Round to three cocimal places as...
In each graph, the shaded region represents the P-value of a hypothesis test. Find the P-value, given that the Standardized Test Statistic is Z = 0.7. Round to 4 decimals a. b. -3 -2 - 0 Z Q c. o Z
The following data represent the number of people aged 25 to 64 years covered by health insurance (private or government) in 2018. Approximate Standard deviation for age. Age 25-34 35-44 45-54 55-64 Number millions) 21.2 32.8 32.7 22.7 144.70 (Type an integer or decimal rounded to two decimal places as needed.) 11.70 (Type an integer or decimal rounded to two decimal places as needed.) ts cess Librai Options Enter your answer in each of the answer boxes. ens Privacy Policy...
The test statistic in a two dash tailedtwo-tailed test is zequals=1.79 Determine the P-value and decide whether, at the 10% significance level, the data provide sufficient evidence to reject the null hypothesis in favor of the alternative hypothesis. LOADING... Click here to view a partial table of areas under the standard normal curve. The P-value is (Round to four decimal places as needed.) This P-value sufficient evidence to reject the null hypothesis in favor of the alternative hypothesis because it...
To test Ho: u = 105 versus Hy: # 105 a simple random sample of size n= 35 is obtained. Complete parts a through e below. Click here to view the t-Distribution Area in Right Tail. (a) Does the population have to be normally distributed to test this hypothesis? Why? O A. No, because the test two-tailed OB. Yes, because n 2 30. OC. No, because n 2 30. OD. Yes, because the sample random (b) If x= 101.9 and...
Calculate the p-value for the following conditions and determine whether or not to reject the null hypothesis. a) one-tail (upper) test, z Subscript p=2.86, and alpha= 0.10 b) one-tail (lower) test, z Subscript p= -0.74, and alpha= 0.05 c) two-tail test, z Subscript p=-1.93, and alpha=0.05 d) two-tail test, z Subscript p=1.13, and alpha= 0.02 a) p-value= (Round to four decimal places as needed.) Determine whether or not to reject the null hypothesis. Choose the correct answer below. A. Do...