Lt6bAnswer 1 and 2 handwritten B. Answer the following problems.1. A researcher wants to test the null hypothesis Ho: p ≤ 0.79 againts thealternative Ha: P >0.79. A sample of 1,200 observations is inputted into acomputer software and returns the result z = 3 and the one-tailed p value =0.0001. What is your interpretation of this p value?2. A politician claims that she will receive 60% of the votes in the upcomingelection. Of a random sample of 200 voters, there were 100 who will surely votefor her. Test the politician's assertion at the 0.05 level of significance.3. A social worker reports that 30% of workers in a factory are below 15 years ofage. Of the 120 employees surveyed, 38 said they were below 15 years old.Using a = 0.05, interpret the p-value.

Given two hypothesis testing problem related to one sample proportion test. We have to solve the…

Answered: B. Answer the following problems. 1. A…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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3. A researcher is testing a two-tailed null hypothesis at the p < .01 level with df = 45. What critical value would she or he use? Justify your answer
An economist has collected data on the number of house foreclosures. The published share of housing units with a foreclosure filing is 0.47%. The economist believes, based on the data she collected, that the share of housing units with a foreclosure filing is different from 0.47%. What are the null and alternative hypotheses? Select the correct answer below: H0: μ≠0.47%; Ha: μ=0.47% H0: μ=0.47%; Ha: μ≥0.47% H0: μ=0.47%; Ha: μ≤0.47% H0: μ=0.47%; Ha: μ≠0.47%
A researcher who wants to know whether the proportion of male births in a hospital is different from the established baseline of 51.07%, would like to test the following hypotheses: Ho:P = 0.51 vs. Ha :P = does not equal 0.51 a) Is the alternative hypothesis upper tail, lower tail, or two tailed? b) What do you conclude if the test results p-value of 0.03 at alpha value = 5% c) What do you conclude if the test results p-value of 0.08 at alpha value = 10%
You conduct a two tailed hypothesis test and get a test statistic of z=1.17 and a pvalue of .2420. If your test had been a left tailed test what would the p value have been in that case
The recommended daily dietary allowance for zinc among males older than age 50 years is 15 mg/day. An article reports the following summary data on intake for a sample of males age 65−74 years: n = 116, x = 12.5, and s = 6.35. Does this data indicate that average daily zinc intake in the population of all males age 65−74 falls below the recommended allowance? (Use ? = 0.05.)State the appropriate null and alternative hypotheses. H0: ? = 15Ha: ? ≠ 15H0: ? = 15Ha: ? > 15 H0: ? = 15Ha: ? ≤ 15H0: ? = 15Ha: ? < 15 Calculate the test statistic and determine the P-value. (Round your test statistic to two decimal places and your P-value to four decimal places.) z = P-value = State the conclusion in the problem context. Do not reject the null hypothesis. There is not sufficient evidence that average daily zinc intake falls below 15 mg/day.Reject the null hypothesis. There is not sufficient evidence that average daily zinc intake falls below 15 mg/day. Do not reject…
A researcher selects a sample from a population with a mean of m = 40 and administers a treatment to the individuals in the sample. If the treatment is expected to decrease scores, which of the following is the correct statement of the null hypothesis for a one-tailed test? m > 40 m < 40 m < 40 m > 40
The test statistic of z=2.19 is obtained when testing the claim that p>0.1. 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=0.05, should we reject H0 or should we fail to reject H0?
16.Regarding the following p-values, for which ones the null hypothesis H0 will be rejected at alpha = .01 level? Group of answer choices p= .03 p=.05 p= .003 p= .3
In order to determine whether or not there is a significant difference between the hourly wages of two companies, the following data have been accumulated. Company 1 Company 2 n1 = 80 n2 = 60 x̄1 = $10.80 x̄2 = $10.00 σ1 = $2.00 σ2 = $1.50 Refer to Exhibit 10-13. The null hypothesis for this test is _____.
A store manager hypothesizes that the average number of pages a person copies on the store’s copy machine is less than 40. A sample of 50 customers’ orders is selected. At a = 0.01, is there enough evidence to support the claim? Use the P-value hypothesis-testing method State the hypotheses and identify the claim. 1. Ho: μ D 40 (Choose the letter of the best answer) A. < B. > C. ≤ D. ≥ E. = F. ≠ 2. Ha: μ 40 (Choose the letter of the best answer) A. < B. > C. ≤ D. ≥ E. = F. ≠ 3. The claim is (Choose the letter of the best answer) A. Ho B. Ha 4. Type of Test: - tailed test (Choose the letter of the best answer) A. Right B. Left C. Two 5. Compute the test value. Test Value = (Type the exact answer) 6. Find the P-value P-value: (Type the exact answer) Make the decision. 7. P a (Choose the letter of the best answer) A. ≤ B. > 8. Decision: Ho (Choose the letter of the…
The test statistic of z=2.42 is obtained when testing the claim that p>0.1. 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 a=0.05, should we reject Ho or should we fail to reject Ho?
1. The average weight of a group of individuals in a weight loss program was originally 200 pounds. After 2 weeks of the program, a sample of 60 such individuals are considered, and it is found that the average weight for these sampled individuals is 180 pounds with a standard deviation of 80 pounds. What would be the pair of hypotheses to test if the average weight has gone down. A. H0 : μ ≥ 200 vs Ha : μ < 200 B. H0 : μ > 200 vs Ha : μ < 200 C. H0 : μ <200 vs Ha : μ > 200 D. H0 : μ < 200 vs Ha : μ ≥ 200 2. If the level of significance is given to be 5%, what would be your decision using the p-value approach? A. The p value is less than or equal to 0.05 and we fail to reject the null hypothesis B. The p value is less than or equal to 0.05 and we reject the null hypothesis C. The p value is greater than 0.05 and we reject the null hypothesis D. The p value is greater than 0.05 and we fail to reject the null hypothesis 3.…

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