Marco conducts a hypothesis test and calculates that his sample results have a p-value of .052, what decision can be made about the null hypothesis? O reject null fail to reject null
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A: We need to use the concept of hypothesis testing
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A: Null hypo. proposes that there is no difference in a set of given values.
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A: Answer is correct decision
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A: Given : Out of 600 customers, 360 like the new plastic bottle packaging of a certain soft drink. The…
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A: We have to find out given z value..
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A: Decision rule : Reject H0 if P-value < α
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A: Given: population proportion(p)=0.46sample proportion(p^)=0.35sample size(n)=60
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A: Decision criterion:If the p-value of the test is less than or equal to the level of significance,…
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A: Claim : p > 0.3 The value of test statistic is z = 0.59 Level of significance = 0.01
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A: We have to find desision..
Q: Assume that you plan to use a significance level of α = 0.05 to test the claim that p1 = p2, Use the…
A:
Q: Assume that you plan to use a significance level of α = 0.05 to test the claim that p1 = p2. Use the…
A: Given data : x1= 57.0 n1= 140 x2= 50.0 n2= 130
Q: In a survey, 32% of the respondents stated that they talk to their pets on the telephone. A…
A: Givenn=200x=60p^=xn=60200=0.3H0:P=0.32H1:P<0.32α=0.05
Q: What is the p-value and the correct decision for this test?
A: Given : n=50 , X=18 , p0=0.40 , α=0.05 Our aim is to find the p-value and the correct decision for…
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A: It is given that, p0 is 0.41, the sample size n is 210.
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A: To test:H0:p=0.45H1:p≠0.45
Q: Assume that you plan to use a significance level of α = 0.05 to test the claim that p1 = p2, Use the…
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Q: if a survey found that 205 out of a random sample of 500 magazine readers said that they read the…
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Q: Assume that you plan to use a significance level of α = 0.05 to test the claim that p1 = p2, Use the…
A: Givenclaim is p1=p2α=0.05n1=200x1=11p^1=x1n1=11200=0.055n2=150x2=18p^2=x2n2=18150=0.12
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A: Introduction: In a hypothesis testing problem, the decision regarding rejection/ failure of…
Q: Assume that you plan to use a significance level of ΅ = 0.05 to test the claim that p1 = p2. Use…
A: Solution: State the hypotheses. Null hypothesis: H0: p1=p2 Alternative hypothesis: H1: p1≠p2 The…
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A: Statistical hypothesis testing is an important method in inferential statistics. It is used to test…
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A: It is given that the The p-value for a hypothesis test turns out to be 0.07774 i.e. P-value =…
Q: The p-value for a hypothesis test turns out to be 0.06787. At a 6% level of significance, what is…
A: It is given that, The p-value for a hypothesis test turns out to be 0.06787 i.e. P-value= 0.06787…
Q: If the p-value is greater than a ,we do not reject the null hypothesis (p > * (a True False
A:
Q: Find the P-value for the indicated hypothesis test with the given standardized test statistic, z.…
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A: Population mean = ? = 235600 Sample S.D = s =25500 Sample size = n =30 Sample mean = x̅ =…
Q: Assume that you plan to use a significance level of a=0.05 to test the claim that p1=p2. Use the…
A: The null and alternative hypothesis is, The sample proportions are The pooled proportion or…
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Q: When would you use a chi-square test? In hypothesis testing, when would you use a one-sample…
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Q: The p-value for a hypothesis test turns out to be 0.0985. At a 8% level of significance, what is the…
A: Decision rule:
Q: The p-value for a hypothesis test turns out to be 0.00857. At a 8% level of significance, what is…
A: Decision rule using p-value : Reject null hypothesis (H0) if p-value less than significance level…
Q: The p-value for a hypothesis test turns out to be 0.03628. At a 9% level of significance, what is…
A: Decision rule : Reject H0 if P-value < α
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Q: Assess the evidence against the null hypothesis if the P-value of the hypothesis test is 0.062.
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Q: In a hypothesis test with hypotheses Ho :p .39, a random sample of size 483 produced a sample…
A: GivenH0:p≤0.39H1:p>0.39sample size(n)=483sample proportion(p^)=0.4250significance level(α)=0.10
Q: The p-value for a hypothesis test turns out to be 0.03621. At a 6% level of significance, what is…
A: Given: Pvalue=0.03621 And level of significance =6%=0.06 We have decisions criteria: if, pvalue<…
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Q: Use the random sample data to test the claim that 72% of students have internet access at home. Use…
A: Given, Sample data: x = 158, n = 200 level of significance = 0.05
Q: WHen writing a null hypothesis for a two sample t test. Do you write U1 = U2 or U1 - U2 = 0? Or do…
A: WHen writing a null hypothesis for a two sample t test. Do you write U1 = U2 or U1 - U2 = 0? Or do…
Q: a.If you use a 0.05 level of significance in a two-tail hypothesis test, what decision will you make…
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- An executive believes that no more than 80% of the company’s employees take all of their vacation days. In a sample of 210 members, 158 employees took all of their vacation days. Therefore, the p-value is 0.0422. When testing the executive's (using a 5% level of significance), what can you conclude concerning the null hypothesis? Reject the null hypothesis Fail to reject the null hypothesisA statistician selects a sample of 20 participants and makes the decision to retain thenull hypothesis. He conducts the same study testing the same hypothesis with asample of 100 participants and makes the decision to reject the null hypothesis. What likely explanation for why the two samples led to different decisions?A statistician selects a sample of 20 participants and makes the decision to retain the null hypothesis. He conducts the same study testing the same hypothesis with a sample of 100 participants and makes the decision to reject the null hypothesis. Provide a likely explanation for why the two samples led to different decisions.
- During the electoral campaign, the mayor comes under criticism that City Hall and local public utilities are discriminating against Asians in the hiring process (that Asians are less likely to be hired than other races/ethnicities). You find that the proportion of Asians employed by local authorities is 7%, in a random sample of 300 public employees, while they represent 10% of the general population. Conduct a hypothesis tests of whether City Hall has fair hiring practices for α = 0.02. Clearly state the null and alternative hypotheses and the conclusion of your test as well as the p-value for the testRandom samples of 100 parts from production line A had 12 parts that were defective and 100 parts from production line B had 5 that were defective. What is the test statistic for the hypothesis test of a difference between the two proportions?Find the P-value for the indicated hypothesis test. In a sample of 88 children selected randomly from one town, it is found that 8 of them suffer from asthma. Find the P-value for a test of the claim that the proportion of all children in the town who suffer from asthma is equal to 11%.
- To determine whether high blood pressure affected whether a person had a stroke, a sample of 300 people who have had strokes are examined. In the sample, 37% had high blood pressure. The p-value for the test that at least 33% of the people who have had strokes have had high blood pressure is 0.0694. If you were to test this hypothesis at the 10% level of significance, what can you conclude concerning the null hypothesis?A student researcher claims that fewer than 8% of the Junior High School completers will enroll in private Senior High Schools. To test this claim, he collected sufficient samples randomly and found out that 85 out of 380 Junior High School completers are planning to enroll in private Senior High Schools. Give the Null hypothesis (with mathematical model): Alternative hypothesis (with mathematical model):A new cream that advertises 52% of women over the age of 50 will experience skin improvement from using their product. A study was conducted in which a sample of 170 women over the age of 50 used the new cream for 6 months. Of those 170 women, 76 of them reported skin improvement (as judged by a dermatologist). Is this evidence that the cream will improve the skin of less than 52 % of women over the age of 50? Perform a hypothesis test using the 0.05 level of significance. a. Set up a null and alternate hypothesis. b. Check the conditions needed to use a sampling distribution (Normal) c. Calculate the standard deviation for the sample proportion d. Calculate the test statistic. Show the formula you are using. e. Calculate the p value. f. Explain what this p value means in the context of this problem using complete sentences. g. Determine if you should reject or accept the null hypothesis and why.
- A new cream that advertises 52% of women over the age of 50 will experience skin improvement from using their product. A study was conducted in which a sample of 170 women over the age of 50 used the new cream for 6 months. Of those 170 women, 76 of them reported skin improvement (as judged by a dermatologist). Is this evidence that the cream will improve the skin of less than 52 % of women over the age of 50? Perform a hypothesis test using the 0.05 level of significance. a. Calculate the test statistic. Show the formula you are using. b. Calculate the p value c. Explain what this p value means in the context of this problem using complete sentences d. Determine if you should reject or accept the null hypothesis and why.A research center claims that 31% of adults in a certain country would travel into space on a commercial flight if they could afford it. In a random sample of 700 adults in that country, 35% say that they would travel into space on a commercial flight if they could afford it. At α=0.10, is there enough evidence to reject the research center's claim? identify the standardized test statisticz= find the P valueP= decide whether to reject or fail to reject the null hypothesisA statistical test of hypothesis produces the P-value P = 0.0203. Will the null hypothesis be rejected at the 0.10 level of significance? Explain
