Describe type I and type Il errors for a hypothesis test of the indicated claim.A furniture store claims that no more than 60% of its new customers will return to buy their next piece of furnitureDescribe the type 1 error Choose the correct answer below.A. Atypel error will occur when the actual proportion of new customers who return to buy their next piece of furniture isno more than 0.60, but you reject Ho p ≤ 0.60OB. A type l error will occur when the actual proportion of new customers who return to buy their next piece of furniture isat least 0.60, but you reject H, p²060um to buy their next piece of furniture isC. A type lerror will occur when the actual proportion of new customers whoat least 0.60 but you fail to reject H, p ² 0 60D. A type l error will occur when the actual proportion of new customers who return to buy their next piece of furniture is

Answered: Describe type I and type II errors for…

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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Hypothesis Testing Using a P-Value identify the claim and state Ho and Ha. find the standardized test statistic z. find the corresponding P-value. decide whether to reject or fail to reject the null hypothesis. interpret the decision in the context of the original claim.
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Question A physical therapist is interested in studying patients recovering from neck injuries. Let the proportion of neck injury patients who fully recover in less than 6 months be p. If the physical therapist wants to know if the proportion of neck injury patients who fully recover in less than 6 months is more than 75%, what are the null and alternative hypotheses? Select the correct answer below: H0: p=0.75; Ha: p>0.75 H0: p=0.75; Ha: p<0.75 H0: p>0.75; Ha: p=0.75 H0: μ=0.75; Ha: μ>0.75
Test the claim that the mean GPA of night students is smaller than 3.3 at the 0.025 significance level.The test is: a. left-tailed b. two-tailed c. right-tailed Based on a sample of 70 people, the sample mean GPA was 3.28 with a standard deviation of 0.06The p-value is: ________ (to 2 decimals)Based on this we: a. Reject the null hypothesis b. Fail to reject the null hypothesis
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Twins In 2009 a national vital statistics report indicatedthat about 3% of all births produced twins. Is the rateof twin births the same among very young mothers?Data from a large city hospital found that only 7 sets oftwins were born to 469 teenage girls. Test an appropriatehypothesis and state your conclusion. Be sure theappropriate assumptions and conditions are satisfiedbefore you proceed.
Claim: Most adults would not erase all of their personal information online if they could. A software firm survey of 633 randomly selected adults showed that 0.7% of them would erase all of their personal information online if they could. Make a subjective estimate to decide whether the results are significantly low or significantly high, then state a conclusion about the original claim. The results significantly so there sufficient evidence to support the claim that most adults would not erase all of their personal information online if they could.
The graph portrays the decision criterion for a hypothesis test for a population mean. The null hypothesis is H:u=µ. The curve is the normal curve for the test statistic under the assumption that the null hypothesis is true. Use the graph to solve the problem. A graphical display of the decision criterion follows. do 0.9 Do not reject H Reject H, 0.8- 0.7- 0.6- 05- 04 0.3- 0.2- 0.1- !0.014 -059 0.59 L18 137 236 295 3.54 2.197 Determine the rejection region. O0.014 02.197 O All z-scores that lie to the right of 2.197 OAll 2-scores that lie to the left of 2.197
Test the claim below about the mean of the differences for a population of paired data at the level of significance a Assume the samples are random and dependent, and the populations are normally distributed. Claim: =0; a=0.01. Sample statistics: d=3.3, sy =8.54, n=8 Identify the null and alternative hypotheses. Choose the correct answer below. OAH: 14<0 H₂:14 20 OC. H₂: #0 OE Ho: 0 H₂:50 The test statistic is t= (Round to two decimal places as needed.) B. Ho: d=0 H₂: 170 OD. HH 20 H₂ P<0 OF. Ho so
Data of variable-A is collected as shown to the right. Is the mean of Variable-A less than 80? State null hypothesis and choose level of significance, a = 0.05. (Use Excel ttest function, provide clear logic and reasoning.) Variable-A Variable-B 78.8 81.9 76.9 78.0 67.8 69.7 68.9 74.7 70.5 70.0 80.0 68.2 63.0 88.7 78.7 86.7 85.4 69.5 87.0 75.1 82.4 71.8 78.2 58.1 76.9 74.8 60.2 93.2 82.6 84.6 67.2 66.5 71.7 77.2 68.9 74.0 69.3 77.7 89.1 78.6 76.3 68.3 74.0 89.0 69.4 82.1 76.3 78.0 66.2 80.3 73.9 82.4 79.1 83.1 80.4 66.4 66.2 67.6 80.9 75.3

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