(a) Find the P - value for the test statistic z=1.36 for the following null and alternative hypotheses:
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(a) Find the P - value for the test statistic z=1.36 for the following null and alternative hypotheses:
a) The null and alternative hypotheses are
Ho: The population mean is 16
Ha: The population mean is less than 16
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- A researcher investigates the effectiveness of a new treatment for OCD (i.e., obsessive-compulsive disorder) in a clinical population that is known to have a mean OCD score of μ = 28. The results will be examined by a z-test, p < 0.05 2-tails test. Which of the following is the correct statement of the null hypothesis for the test?A. μ ≠28 (i.e., the treatment has no significant effect).B. μ ≠28 (i.e., the treatment has a significant effect).C. μ = 28 (i.e., the treatment has a significant effect).D. μ = 28 (i.e., the treatment has no significant effect).The p-value for a hypothesis test turns out to be 0.05949. At a 9% level of significance, what is the proper decision? Reject H0�0 Fail to reject H0A researcher is using a one-tailed hypothesis test with α = .01 to evaluate the effect of a treatment. If the critical/cut-off value is t = 2.479, how many individuals are in the sample
- At least one of the answers above is NOT correct. An Office of Admission document claims that 55.4% of UVA undergraduates are female. To test this claim, a random sample of 210 UVA undergraduates was selected. In this sample, 55.2% were female. Is there sufficient evidence to conclude that the document's claim is false? Carry out a hypothesis test at a 6% significance level. A. The value of the standardized test statistic: -0.058 Note: For the next part, your answer should use interval notation. An answer of the form (-00, a) is expressed (- infty, a), an answer of the form (b, oo) is expressed (b, infty), and an answer of the form (-00, a) U (b, 0) is expressed (-infty, a)U(b, infty). B. The rejection region for the standardized test statistic: (-infty,-2.748) u(2.748, infty) C. The p-value is 0.9538 D. Your decision for the hypothesis test: A. Reject Ho. B. Reject H1. OC. Do Not Reject H1. D. Do Not Reject Ho.For the following hypothesis test, determine the null and alternative hypotheses. Also, classify the hypothesis test as two-tailed, left-tailed, or right-tailed. The mean length of imprisonment for motor-vehicle theft offenders in this country is 19.7 months. A hypothesis test is to be performed to determine whether the mean length of imprisonment for motor-vehicle theft offenders in this city differs from the national mean of 19.7 months. Choose the correct null and alternative hypotheses below. OA. Ho: μ> 19.7 months OB. Ho: μ 19.7 months OF. Ho: H=19.7 months Ha: μ< 19.7 months OD. Ho: μ= 19.7 months Ha: μ# 19.7 months O E. Ho: μ# 19.7 months Ha: μ = 19.7 months Which of the following is the correct classification of the hypothesis test? O A. Right-tailed O B. Two-tailed O C. Left-tailedCalculate the p-value for a two-tailed hypothesis test with test statistic z = - 1.80 that is:
- For the last part of the question, the options are: HIGH or LOW; and IS or IS NOTReport a p-value for the following hypothesis test. A dowser has correctly located water for a well 5 out of 5 times in Jones County. In Jones County, someone who is just guessing has a 40% chance of locating water for a well. Does this sample provide sufficient evidence that the dowser can locate water and is not just guessing? Test Ho: p = 0.4. Dowser is just guessing. Versus Ha:p > 0.4. Dowser can locate water. (Write your answer as a decimal). 84 words English (United States) 19 16 MacBook Air 吕0 F3 000 F2 F4 F6You are testing the following set of hypotheses at a significance level of 0.05 ?0:?=124 ??. ??:?≠124H0:μ=124 vs. Ha:μ≠124?0:?=124 ??. ??:?≠124H0:μ=124 vs. Ha:μ≠124 You get the value of z = -1.65 for your test statistic. The p-value is [ Select ] ["None of these", ".099", ".9505", ".0495"] and therefore you should [ Select ] ["reject", "fail to reject"] the null hypothesis.
- You are conducting a study to see if the accuracy rate for fingerprint identification is significantly less than 0.69. If your null and alternative hypothesis are: Ho:p > 0.69 Ha:p < 0.69 Then the test is: two tailed O right tailed left tailed16% of all college students volunteer their time. Is the percentage of college students who are volunteers different for students receiving financial aid? Of the 398 randomly selected students who receive financial aid, 56 of them volunteered their time. What can be concluded at the a = 0.01 level of significance? a: For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ? Select an answer (please enter a decimal) H₁: ? Select an answer ✓ (Please enter a decimal) c. The test statistic ?v= (please show your answer to 3 decimal places.) (Please show your answer to 4 decimal places.) d. The p-value =You are conducting a study to see if the proportion of men over 50 who regularly have their prostate examined is significantly different from 0.22. You use a significance level of a = :0.002. Но: Ho:p = 0.22 Ha:p + 0.22 You obtain a sample of size n = 532 in which there are 144 successes. What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value = The p-value is... less than (or equal to) a O greater than a