According to a study in a previous year, 55.0% of households nationwide used natural gas for heating during a year. Recently, a survey of 3,200 randomly selected households showed that 56.0% used natural gas. Use a 0.05 significance level to test the claim that the 55.0% national rate has changed. Formulate the null and alternative hypotheses. Choose the correct answer below. OA. Ho: p=0.55 Ha: p<0.55 ... OC. Ho: p0.55 Ha: p=0.55 O B. Ho: p=0.55 Ha: p>0.55 O D. Ho: p=0.55 Ha: p0.55

A random sample of 873 births included 434 boys. Use a 0.10 significance level to test the claim that 50.7% of newborn babies are boys. Do the results support the belief that 50.7% of newborn babies are boys? Identify the null and alternative hypotheses for this test. Choose the correct answer below. OA. H₂: p=0.507 H₁: p=0.507 OB. Ho: p=0.507 H₁: p0.507 OD. Ho: p*0.507 H₁: p=0.507 Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is (Round to two decimal places as needed.) Identify the P-value for this hypothesis test. The P-value for this hypothesis test is (Round to three decimal places as needed.) Identify the conclusion for this hypothesis test. OA. Fail to reject Ho. There is sufficient evidence to warrant rejection of the claim that 50.7% of newborn babies are boys. OB. Reject Ho. There is sufficient evidence to warrant rejection of the claim that 50.7% of newborn babies are boys. OC. Fail to reject Ho. There is not sufficient…

Consider a drug that is used to help prevent blood clots in certain patients. In clinical trials, among 6052 patients treated with this drug, 149 developed the adverse reaction of nausea. Use a 0.05 significance level to test the claim that 3% of users develop nausea. Does nausea appear to be a problematic adverse reaction? Identify the null and alternative hypotheses for this test. Choose the correct answer below. O A. Ho: p=0.03 H;:p>0.03 O B. Ho: p#0.03 H;:p= 0.03 OC. Ho: p= 0.03 H4: p+0.03 O D. Ho: p= 0.03 H:p<0.03 Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is (Round to two decimal places as needed.) Identify the P-value for this hypothesis test. The P-value for this hypothesis test is. (Round to three decimal places as needed.) Identify the conclusion for this hypothesis test.

In a study of the accuracy of fast food drive-through orders, one restaurant had 30 orders that were not accurate among 385 orders observed. Use a 0.10 significance level to test the claim that the rate of inaccurate orders is equal to 10%. Does the accuracy rate appear to be acceptable? Identify the null and alternative hypotheses for this test. Choose the correct answer below. O A. Ho: p=0.1 H1:p>0.1 O B. Ho: p=0.1 H:p<0.1 OC. Ho: p 0.1 H1:p=0.1 D. Ho: p=0.1 H:p#0.1 Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is - 1.44 . (Round to two decimal places as needed.) Identify the P-value for this hypothesis test. The P-value for this hypothesis test is (Round to three decimal places as needed.)

In a program designed to help patients stop smoking, 243 patients were given sustained care, and 80.7% of them were no longer smoking after one month. Use a 0.05 significance level to test the claim that 80% of patients stop smoking when given sustained care.. Identify the null and alternative hypotheses for this test. Choose the correct answer below. OA. Ho p=0.8 H₁: p=0.8 OB. Ho: p=0.8 H₁: p>0.8 OC. Ho p 0.8 H₁ p=0.8 OD. Ho: p=0.8 H₁ p<0.8

.  What is the appropriate analysis? Using statistical equations, give complete statements of the null and alternative hypotheses. Give any appropriate equations that may be generated by the analysis.

In a study of the accuracy of fast food drive-through orders, one restaurant had 38 orders that were not accurate among 335 orders observed. Use a 0.10 significance level to test the claim that the rate of inaccurate orders is equal to 10%. Does the accuracy rate appear to be acceptable? Identify the null and alternative hypotheses for this test. Choose the correct answer below. Ho:p = 0.1 H4:p#0.1 O B. Ho: p#0.1 H1:p=0.1 OC. Ho: p=0.1 H:p0.1 Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is 0.82 (Round to two decimal places as needed.) Identify the P-value for this hypothesis test. The P-value for this hypothesis test is (Round to three decimal places as needed.) Enter your answer in the answer box and then click Check Answer. Final Check parts 2 remaining Clear All MacBook Pro 4) トII トト 88 F10 F7 F9 esc F3 F5 F4 F1 F2 @ 2$ % & delete 2 3 4 6. 7 8 Q W E T Y tab F G K A S caps lock く つ DI

In a study of the accuracy of fast food drive-through orders, one restaurant had 37 orders that were not accurate among 316 orders observed. Use a 0.01 significance level to test the claim that the rate of inaccurate orders is equal to 10%. Does the accuracy rate appear to be acceptable? Identify the null and alternative hypotheses for this test. Choose the correct answer below. OA. Ho: p=0.1 H₁: p=0.1 OB. Ho: p=0.1 H₁: p>0.1 ỌC. Hop=0.1 H₁: p<0.1 OD. Ho: p=0.1 k H₁: p=0.1 Identify the test statistic for this hypothesis test.

Consider a drug testing company that provides a test for marijuana usage. Among 294 tested subjects, results from 29 subjects were wrong (either a false positive or a false negative). Use a 0.05 significance level to test the claim that less than 10 percent of the test results are wrong. Identify the null and alternative hypotheses for this test. Choose the correct answer below. OA. Ho: p=0.1 H₁: p0.1 OD. Ho: p=0.1 H₁: p=0.1 Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is. (Round to two decimal places as needed.) Identify the P-value for this hypothesis test. The P-value for this hypothesis test is. (Round to three decimal places as needed.) Identify the conclusion for this hypothesis test.

The percentage of complete passes is an important measure for a quarterback in the NFL. A particular quarterback has a career completion percentage of 55%. The quarterback got a new coach and then played a few games where he completed 48 of 100 passes. a. Specify the null and alternative hypotheses to determine whether the proportion of completed passes has decreased with the new coach. b. Calculate the value of the test statistic and the p-value. c. At the 5% significance level, can you conclude that the quarterback's completion percentage has decreased?  How do I solve this in excel?