The test statistic of z= - 3.48 is obtained when testing the claim that p< 0.77. a. Using a significance level of a = 0.01, find the critical value(s). b. Should we reject Ho 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. The critical value(s) is/are z = (Round to two decimal places as needed. Use a comma to separate answers as needed.) b. Choose the correct conclusion below. A. Reject Ho. There is not sufficient evidence to support the claim that p<0.77. B. Fail to reject Ho. There is not sufficient evidence to support the claim that p< 0.77. C. Reject Ho. There is sufficient evidence to support the claim that p< 0.77. D. Fail to reject Ho. There is sufficient evidence to support the claim that p<0.77.

1 The test statistic of z = 1.88 is obtained when testing the claim that p>0.41. This is a right-tailed test. Using a 0.01 significance level, complete parts (a) and (b). Click here to view the standard normal distribution table for negative z scores. Click here to view the standard normal distribution table for positive z scores. a. Find the critical value(s). Select the correct choice below and fill in the answer box(es) within your choice. (Round to two decimal places as needed.) O A. There is one critical value; the critical value is OB. There are two critical values; the lower critical value is b. Should we reject Ho or should we fail to reject Ho? and the upper critical value is O A. Ho should not be rejected, since the test statistic is in the critical region. OB. Ho should be rejected, since the test statistic is in the critical region. O C. Ho should not be rejected, since the test statistic is not in the critical region. O D. Ho should be rejected, since the test statistic is…

The test statistic of z= - 1.46 is obtained when testing the claim that p = 1/6. a. Using a significance level of a = 0.05, find the critical value(s). b. Should we reject Ho 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. The critical value(s) is/are z= (Round to two decimal places as needed. Use a comma to separate answers as needed.)

Complete parts (a) and (b) below. Click here to view Page 1 of the table of areas under the standard normal curve. Click here to view Page 2 of the table of areas under the standard normal curve. a. The test statistic in a right-tailed test is z= 1.71. Determine the P-value and decide whether, at the 5% significance level, the data provide sufficient evidence to reject the null hypothesis in favor of the alternative hypothesis. The P-value is (Round to three decimal places as needed.) This P-value V sufficient evidence to reject the null hypothesis in favor of the alternative hypothesis because it is V the significance level. b. The test statistic in a right-tailed test is z= - 0.82. Determine the P-value and decide whether, at the 5% significance level, the data provide sufficient evidence to reject the null hypothesis in favor of the alternative hypothesis. The P-value is (Round to three decimal places as needed.) This P-value sufficient evidence to reject the null hypothesis in…

6 The test statistic of z = -2.47 is obtained when testing the claim that p<7. This is a left-tailed test. Using a 0.01 significance level, complete parts (a) and (b). Click here to view the standard normal distribution table for negative z scores. Click here to view the standard normal distribution table for positive z scores. a. Find the critical value(s). Select the correct choice below and fill in the answer box(es) within your choice. (Round to two decimal places as needed.) O A. There are two critical values; the lower critical value is OB. There is one critical value; the critical value is b. Should we reject Ho or should we fail to reject Ho? and the upper critical value is O A. Ho should be rejected, since the test statistic is in the critical region. O B. Ho should not be rejected, since the test statistic is not in the critical region. O C. Ho should be rejected, since the test statistic is not in the critical region. O D. Ho should not be rejected, since the test statistic…

The test statistic of z= -3.23 is obtained when testing the claim that p <0.31. a. Using a significance level of x = 0.01, find the critical value(s). b. Should we reject Ho 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. The critical value(s) is/are z = 0. (Round to two decimal places as needed. Use a comma to separate answers as needed.) b. Choose the correct conclusion below. O A. Reject Ho. There is sufficient evidence to support the claim that p <0.31. B. Fail to reject Ho. There is not sufficient evidence to support the claim that p <0.31. OC. Fail to reject Ho. There is sufficient evidence to support the claim that p<0.31. O D. Reject Ho. There is not sufficient evidence to support the claim that p<0.31. 484

Red Blood Cell Count: A simple random sample of 300 adult males is taken to measure the red blood cell count (in cells per microliter). Use a significance level of 0.01 to test the claim that the sample has a mean less than the population mean (μ = 5.4 million cells per microliter). Does the sample have a normal distribution? Explain why. Does the result suggest that the male sample has a red blood cell count below 5.4 million cells per microliter? Determine the descriptive statistics of the sample. State the statistical hypotheses: H0 and HA. Determine the α Is this test one or two tailed? What statistical conclusion did you reach regarding the question being evaluated? RED 4.80 4.73 4.47 4.32 4.95 3.95 4.68 4.60 4.09 5.47 4.44 4.15 5.07 4.38 5.22 4.22 4.32 4.30 6.34 5.60 4.93 5.18 3.54 4.61 4.22 4.99 5.23 4.01 4.07 5.06 4.30 4.28 4.76 4.14 4.61 4.67 4.36 4.28 4.59 4.77 3.86 5.38 5.03 4.60…

The test statistic of z = 2.55 is obtained when testing the claim that p = 0.269. 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 α = 0.10, should we reject Ho 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 two-tailed test. b. P-value= (Round to three decimal places as needed.)

The test statistic of z = 0.81 is obtained when testing the claim that p > 0.2. 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 α = 0.10, should we reject Ho 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 test. 4 b. P-value = (Round to three decimal places as needed.) c. Choose the correct conclusion below. ⒸA. Fail to reject Ho. There is not sufficient evidence to support the claim that p > 0.2 OB. Reject Ho. There is not sufficient evidence to support the claim that p > 0.2. O C. Fail to reject Ho. There is sufficient evidence to support the claim that p > 0.2. O D. Reject Ho. There is sufficient evidence to support the claim that p > 0.2.

Let x be a random variable representing dividend yield of Australian bank stocks. We may assume that x has a normal distribution with s.d.= 2.3% . A random sample of 12 Australian bank stocks has a sample mean of x=6.16% . For the entire Australian stock market, the mean dividend yield is 7.2%. Do these data indicate that the dividend yield of all Australian bank stocks is higher than 7.2%? Find (or estimate) the P-value. Round your answer to three decimal places.