4) In the p-value approach, if p-value>a (the level of significance) we reject the null hypothesis. 201
Q: 12. If a hypothesis test rejected the null hypothesis, would it still reject the null hypothesis if…
A: Given information- We have given that a hypothesis test rejected the null hypothesis. We have to…
Q: Assumer significance level of a equals .05 and used to giving information to complete parts ANB…
A: From the provided information, Level of significance (α) = 0.05 The P value obtained from hypothesis…
Q: ppose that the P-value in a hypothesis test is 0.08. If the significance level for the the following…
A: If the p-value is greater than the level of significance, the null hypothesis is not rejected.
Q: 1.The battle of the sexes lives on still today. Since admission standards do not address gender…
A: Detailed explanation: Here are the steps for each hypothesis test:1. Comparing Mean GPA Between Men…
Q: Test the claim that the proportion of men who own cats is smaller than the proportion of women who…
A: From the provided information,
Q: -Find the correct null hypothesis and for each correct alternative hypothesis 6. You want to test…
A: Given : Claim : A higher percentage of males who are Democrat than females who are Democrat.
Q: Results from a civil servant exam are shown in the table to the right. Is there sufficient evidence…
A: The Hypothesis: Option A H0: White and Minority candidates have the same chance of passing the test.…
Q: Passed Failed White Results from a civil servant exam are shown in the table to the right. Is there…
A: We have given that Passed Failed Total White candidates 14 15 29 Minority candidates 8…
Q: A genetic experiment involving peas yielded one sample of offspring consisting of 411 green peas and…
A:
Q: A certain drug is used to treat asthma. In a clinical trial of the drug, 24 of 286 treated subjects…
A: Given,n=286x=24and α=0.01
Q: More than 33% of households in Thunder Bay own two or more cars. The null hypothesis is The research…
A: We have given that Population proportion p=33%=0.33 Null and alternative hypothesis.
Q: A certain drug is used to treat asthma. In a clinical trial of the drug, 19 of 293 treated subjects…
A: n = 293x = 19claim : p < 0.09α = 0.01the technology output is given.
Q: You are conducting a study to see if the proportion of voters who prefer Candidate A is…
A:
Q: 9) Determine the decision criterion for rejecting the null hypothesis in the given hypothesis test3;…
A: Given information: n = 15 α=0.01
Q: Suppose a researcher wants to estimate the population proportion of defective light bulbs. He took a…
A: From the provided information, Population proportion (p) = 0.07 The hypotheses can be constructed…
Q: 1) Estimate the difference between the ages of male and female respondents. 2) Estimate the…
A: Solution : Given : X : Male respondents n1 = 33 Y : Female respondents…
Q: A genetic experiment involving peas yielded one sample of offspring consisting of 439 green peas and…
A: Given DataTotal peas(n) = green peas + yellow peas = 439 + 160 = 599
Q: Consider a drug that is used to help prevent blood clots in certain patients. In clinical trials,…
A: From the provided information, Level of significance (α) = 0.05 The test statistic is -2.43. The p…
Q: Test the claim that the proportion of people who own cats is smaller than 60% at the 0.10…
A: We have to test claim.
Q: If you use a 0.05 level of significance in a two-tail hypothesis test, what decision will you make…
A: Solution: 4. From the given information, ZSTAT = –0.45 and the test is two-tailed.
Q: A genetic experiment involving peas yielded one sample of offspring consisting of 442 green peas and…
A: It is given that a sample of offspring consisting of 442 green peas in which 142 are yellow peas.
Q: You want to buy a washing machine, and a salesperson tells you that the mean repair costs for Model…
A:
Q: If a researcher is wrong in his decision and he rejects the null when the null is true, what type of…
A: Given, If a researcher is wrong in his decision and he rejects the null when the null hypothesis is…
Q: Test the claim that the proportion of people who own cats is smaller than 30% at the 0.005…
A: Givenn=100p^=0.21p=0.3α=0.005
Q: You are conducting a hypothesis test where alternative (research) hypothesis is that mu is greater…
A: The test statistic is independent of significance level.
Q: Test the claim that the proportion of men who own cats is significantly different than the…
A: From the provided information,
Q: c) In the test of a certain hypothesis the p-valuecorresponding to the test statistics is 0.0316.…
A: Given that P-value=0.0316 i) 0.01 level of significance ii) 0.05 level of significance iii) 0.10…
Q: Background In a previous lab, the results of a study conducted at a large university was presented.…
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Q: The producer of a TV special expected about 40 percent of the viewing audience to watch a rerun of a…
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Q: If you reject the null hypothesis at the 5% significance level, would you reject it at the 7% level?
A: It is given that we reject the null hypothesis at 5% significance level.
Q: Ho: p = 0.75 H₁: p < 0.75 at the 0.05 significance level. The value of the test statistic and the…
A: Given that Sample size n =200 Favorable cases x =130 Sample proportion p^=x/n =130/200 =0.65
Q: A social psychologist is interested in finding out whether people who self-identify as shy are more…
A: The question is about categorical data analysis Given : To find : 1 ) Exp. frequency for shy /…
Q: A statistical test of hypothesis produces the P-value P = 0.0467. Will the null hypothesis be…
A:
Q: 5. Two random samples, one from 95 employees of Division A and a second of 50 employees from…
A: Given the data Division Favor Oppose Uncertain Total A 44 39 12 95 B 21 26 3 50 Total 65 65…
Q: Q4. Which of these statements are correct for a hypothesis test: I. The Significance Level is the…
A:
Q: (a) Write the claim mathematically and identify Ho and Ha Which of the following correctly states Ho…
A: 38,28,31,33,32,42,26,22,29,26,32,33,30,29,27,27,29,24sample size(n)=18=0.10
Q: Suppose your marketing department feels like 36% of customers prefer a certain feature for a…
A: a) The null hypothesis is: H0: p = 0.36
Q: Test the claim that the proportion of men who own cats is significantly different than the…
A: Given,nM=80 , pM^=0.35nF=80 , pF^=0.50α=0.01
Q: Test the claim that the proportion of people who own cats is larger than 20% at the 0.05…
A:
Q: If you have do not have enough evidence to reject the null hypothesis at the 5% significance level…
A: We have given that Do not have enough evidence to reject the null hypothesis H0 at the 5% level of…
Q: 6. Which of the following statements are true? Report true statement(s), if any. No reasons…
A: 6. (a) Yes, the P-values convey information about the strength of evidence against the null…
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- A random sample of 200 students is taken at the University of Ottawa in order to determine the true proportion p who smoke marijuana. It is observed that 130 smoke marijuana. We wish to test Ho p = 0.75 H₁ p < 0.75 at the 0.05 significance level. The value of the test statistic and the decision are -3.27 reject the null hypothesis 3.27 do not reject the null hypothesis 2.45 reject the null hypothesis -2.45 reject the null hypothesisSolve the problem. 9) The table shows the number of households burglarized in a sample of households with dogs and in a sample of households without dogs. Assume that you plan to use a significance level of a = 0.01 to test the claim that p1 < p2. Find the critical value(s) for this hypothesis test. Do the data support the claim that a smaller proportion of households with pet dogs are burglarized? 9) Household with Dog Household without Dog Number of households in sample Number of households burglarized 206 140 20 11 A) z = -2.575; no B) z = -2.33; no C) z = 2.33; yes D) z = -1.96; yesYou receive a brochure from a large university. The brochure indicates that the mean class size for full-time faculty is fewer than 31 students. You want to test this claim, You randomly select 18 classes taught by full-time faculty and determine the class size of each. The results are shown in the table below, At a = 0.01. can vou support the university's claim? Complete parts (a) through (d) below. Assume the population is normally distributed. 32 26 27 30 31 37 23 28 320 29 27 37 32 31 25 31 29 22 (a) Write the claim mathematically and identify Ho and Ha. Which of the following correctly states Ho and Ha? O C. Ho: H=31 O A. Ho: H> 31 Hai H531 O B. Ho: H231 Ha:H31 (b) Use technology to find the P-value. P= (Round to three decimal places as needed.) (c) Decide whether to reject or fail to reject the null hypothesis. Which of the following is correct? O A. Fail to reject Ho because the P-value is less than the significance level. O B. Reject H because the P-value is less than the…
- If we reject the null hypothesis, can we claim to have proved that the null hypothesis is false? Why or why not? Choose the correct answer below. O A. Yes, if the test conditions are satisfied and the p-value is smaller than the significance level, then the null hypothesis is proven to be false. B. Not necessarily, if the test conditions are satisfied and the p-value is appropriately small, the null hypothesis can only be proven false if the significance level is appropriately small. C. Not necessarily, if the test conditions are satisfied and the p-value is appropriately small, the null hypothesis can only be proven false if the power is appropriately large. O D. No; we don't use prove because we cannot be 100% sure of conclusions based on chance processes.Test the claim that the proportion of people who own a pet is smaller than 50% at the 0.05 significance level. The null and alternative hypothesis would be: Но: р 3 0.5 Но:д > 0.5 Но:д 0.5 Ні:р 0.5 Hi:р + 0.5 The test is: left-tailed two-tailed right-tailed Based on a sample of 600 people, 288 owned a pet, the p-value is: |(to 4 decimals) Based on this we: Fail to reject the null hypothesis Reject the null hypothesisIs there a relationship between the number of votes received by candidates for public office and the amount spent on their campaigns? Candidate Amount spent (000) Votes received (000)Weber $3 14Taite $4 7Spencer $2 5Lopez $5 12Using a 0.01 significance level, do the formal hypothesis test (using critical values).Remember to show your steps (including all relevant information) show the steps on how to solve it
- Clarify the solutionPassed Failed White Results from a civil servant exam are shown in the table to the right. Is there sufficient evidence to support the claim that the results from the test are discriminatory? Use a 0.05 significance level. 16 14 candidates Minority candidates 7 21 Determine the null and alternative hypotheses. O A. Ho: White and minority candidates do not have the same chance of passing the test. H4: White and minority candidates have the same chance of passing the test. B. Ho: A white candidate is more likely to pass the test than a minority candidate. H,:A white candidate is not more likely to pass the test than a minority candidate. Ho: A white candidate is not more likely to pass the test than a minority candidate. H,: A white candidate is more likely to pass the test than a minority candidate. D. Ho: White and minority candidates have the same chance of passing the test. H,: White and minority candidates do not have the same chance of passing the test. Determine the test…Suppose a hypothesis test will be used to investigate whether the proportion of United States adults who have been a victim of a cybercrime, such as identity theft, is greater than 0.25. Suppose that the hypothesis test is conducted using a significance level of 0.05 and the power of the test is determined for a specific alternative value using the significance level of 0.05. If the significance level of the hypothesis test is changed to 0.01 and the power of the test is computed for the same alternative value using a significance level of 0.01, which of the following best describes the change(s) to the probability of a Type I error and the power of the test? (A) The probability of a Type I error would decrease, and the power of the test would stay the same. (B) The probability of a Type I error would decrease, and the power of the test would increase. (C) The probability of a Type I error would decrease, and the power of the test would decrease. (D) The probability of a Type I error…
- Show your complete solution II. Use an appropriate statistical tool to test the hypothesis. Use the stepwise method of hypothesis testing. 3. A researcher observed that students preferred several online class platforms. For this reason, he performs a survey to know whether or not gender is associated with online class platforms preference and he was able to gathered the following data Zoom Google Meet MS Teams Total Male 110 95 40 245 Female 105 100 50 255 Total 215 195 90 500The blue catfish (Ictalurus Furcatus) is the largest species of North American catfish. The current world record stands at 143 pounds, which was caught in the John H. Kerr Reservoir (Bugg's Island Lake) located in Virginia. According to American Expedition, the average weight of a blue catfish is between 20 to 40 pounds. Given that the largest blue catfish ever caught was at the John H. Kerr Reservoir, you believe that the mean weight of the fish in this reservoir is greater than 40 pounds. Use the data below, which represents the summary statistics for 42 blue catfish caught at this reservoir, and a 0.05 significance level to test the claim that the mean weight of the fish in the John H. Kerr Reservoir is greater than 40 pounds. n = 42; a = 40.51 pounds; s = 2.99 pounds a) Identify the null and alternative hypotheses? Но: ? На: ?4. Explain the procedure for testing a hypothesis using the P-value approach? What is the criterion for judging whether to reject the null hypothesis?