Assume that IQ scores for a certain population are approximately N (µ, o² = 100). To test Ho : µ = 110 against the one-tailed alternative hypothesis Ha : µ > 110, we take a random sample of size n = 16 from this population and observe ī = 113.5. Do we accept or reject Ho at the 5% significance level? Do we accept or reject Ho at the 10% significance level? )What is the p-value of this test?
Q: You wish to test the following claim (Ha) at a significance level of a = 0.005. Ho: P₁= P2 Ha: P1 P2…
A: Significance level, Null and alternative hypotheses:Sample 1:Sample 2:
Q: Test the claim that the proportion of men who own cats is smaller than 40% at the .10 significance…
A: The random variable who own cats follows normal distribution. We have to test whether the proportion…
Q: Suppose 1Q scores were obtained for 20 randomly selected sets of twins. The 20 pairs of measurements…
A: T test is used to determine whether there exist mean significance between sample and population,…
Q: You are conducting a study to see if the probability of a true negative on a test for a certain…
A: The random variable X follows normal distribution. We have to test whether the probability of a true…
Q: The average price per square foot for a home in a large county in a certain state is $225. The…
A: Given that the claim is the average price per square foot for a home in a large county in a certain…
Q: Only 18% of registered voters voted in the last election. Will voter participation decline for the…
A: 1) For this study, we should use z-test for a population proportion 2) Hypothesis: H0: p=0.18 H1: p…
Q: You are conducting a study to see if the proportion of men over 50 who regularly have their prostate…
A: Given data: Significance level = 0.10 n = 459 x = 271 Hypothesis are: H0:p=0.62 H1:p≠0.62
Q: Previously, 8.1% of workers had a travel time to work of more than 60 minutes. An urban economist…
A:
Q: If the test value for the difference between the means of two large samples is 1.43 then the…
A: Given: The test value for the difference between the means of two large samples is 1.43. The…
Q: You wish to test the following claim (Ha) at a significance level of a = 0.002. Ho: P1 = P2 Ha: P₁…
A:
Q: Only 10% of registered voters voted in the last election. Will voter participation increase for the…
A: (1) Determine the type of study used. The type of study used is in the given problem is “Z-test…
Q: You wish to test the following claim (Ha) at a significance level of a 0.05. H.: P1 – P2 = 0 Ha:P1 -…
A: Solution: State the hypotheses. Null hypothesis: H0: pl–p2=0 Alternative hypothesis: Ha: pl–p2<0…
Q: ased on the sample of 45 people, 86% owned cars The test statistic is: ________ (to 2 decimals)…
A: The hypothesized proportion is 0.9.
Q: The p-value for the one-sided test Ho: µ = 3 ppm vs. H:u> 3 ppm was 0.23. Do you reject the null…
A: GivenP-value for the one-sided test is 0.23H0:μ=3 ppmH1:μ>3ppmsignificance level(α)=5%=0.05
Q: Given a critical t score of -2.33 and t observed being -2.01, the decision you should make is…
A: It is given that the critical t score is -2.33 and the observed t value is -2.01.
Q: A test of Hō: p = 0.4 versus Ha: p > 0.4 has the test statistic z = 2.52. Part A: What conclusion…
A: To test the hypothesis :The value of the test statistics is z=2.52
Q: The wrist extension in degrees was measured for each of 36 randomly selected individuals as they…
A:
Q: Test the claim that the proportion of people who own cats is larger than 50% at the 0.025…
A: Let p denotes the population proportion of people who owns cats. The claim of the test is that the…
Q: Only 18% of registered voters voted in the last election. Will voter participation decline for the…
A: The study is about voter participation decline for the upcoming election indicating that the…
Q: In a test of hypothesis Ho: P = .31 versus Ha: P > .31 at the 1% level of significance a sample size…
A:
Q: The computed 95% confidence interval for a population mean u is (1.5, 3.2). Suppose all the…
A: Assume that μ is the population mean.
Q: P-value = (Round to three decimal places as needed.)
A: Here n = sample size = 21 T test statistic = 2.309
Q: 0.3.16-T A data set lists earthquake depths. The summary statistics are n = 400, x = 5.82 km, s =…
A: Here we don't know the population standard deviation. We use t test for one mean.
Q: A sample of n=24 is selected from a population = 120 and σ = 40. If the sample mean is 130, what is…
A: It is given that the population mean, μ=120 and standard deviation, σ=40. For the sample size of 24,…
Q: Test the claim that the proportion of men who own cats is smaller than the proportion of women who…
A: Solution: Given information: n1=80 Sample size of men n2= 40 Sample size of womenp^1=0.35 Sample…
Q: You wish to test the following claim (H) at a significance level of a = 0.10. Ho: P1 = P2 Ha: P₁ P2…
A: given data n1 = 370x1 = 708n2 = 579x2 = 324α = 0.10claim : p1 < p2p^1 = x1n1 = 370708…
Q: A student performs a test of Ho: p = 0.4 versus H₂: P = 0.4 and gets a p-value of 0.03. The student…
A: Here we need to choose from the correct option.When performing hypothesis testing, you compare the…
Q: You wish to test the following claim (HaHa) at a significance level of α=0.002 Ho:p=0.72…
A: Given,sample size(n)=631no.of successful observations(X)=424H0:P=0.72Ha:P<0.72and α=0.002
Q: part C please..ive asked the question 4 times and all times it was wrong
A: I am giving solution for part C only. Given information- Sample size, n = 519 Sample proportion,…
Q: You are conducting a study to see if the probability of a true negative on a test for a certain…
A: Given that: n=415 x=361 Hypothesis, H0:p=0.85 H1:p≠0.85 The test is a two-tailed test.
Q: You wish to test the following claim (Ha) at a significance level of a = 0.05. Ho: P₁ ≤ P2 Ha:P₁ >…
A: Given Alpha=0.05 n2=123 n2=104 X1=269 X2=335
Q: Test the claim that the proportion of people who own cats is significantly different than 20% at the…
A: given data claim : p ≠ 0.2α = 0.01p^ = 0.11n = 500
Q: Only 16% of registered voters voted in the last election. Will voter participation increase for the…
A:
Q: is larger than the mean GPA of day students a up Ho:PN PD H1:PN + PD H1:µN
A: Formula : Test statistic : Given : For Sample 1 x̄1 = 2.34 s1 = 0.06 n1 = 30…
Q: A suggestion is made that the proportion of people who have food allergies and/or sensitivities is…
A:
Q: Only 14% of registered voters voted in the last election. Will voter participation increase for the…
A:
Q: You wish to test the following claim (Ha) at a significance level of a = 0.02. H.:P1 = P2 Ha:P1 < P2…
A: Given n1=476, X1=344, n2=398, X2=331 Level of significance=0.02 p1cap=X1/n1 and p2cap=X2/n2
Q: A local restaurant claims that the waiting time for its patrons to be served is the lowest in the…
A:
Q: sample 1 (M cars) : n1 = 24, X ̄1 = 29.8, s1 = 2.56 sample 2 (J cars) : n2 = 28, X ̄2 = 27.3, s2 =…
A: Given Data : For Sample 1 x̄1 = 29.8 s1 = 2.56 n1 = 24 For Sample 2…
Q: Using the dataset "Taxi ridership data": (1) Using X = Driver's year of employment (work experience)…
A: From the given information, Let X denote the Driver's year of employment (work experience) and Y…
Q: You wish to test the following claim (H₁) at a significance level of a = 0.05. Ho: P₁ P2 Ha:P1 P2…
A: given data n1 =260x1 = 171n2 = 286x2 = 204α = 0.05claim : p1 ≥ p2p^1 = x1n1 = 171260 =0.6577p^2 =…
Q: A test of Ho: u=7 versus H₁: μ<7 is performed using a significance level of a=0.01. The P-value is…
A: Given: H0:μ=7H1:μ<7 Significance level is 0.01 P-value = 0.20.
Q: Test the claim that the proportion of men who own cats is smaller than the proportion of women who…
A:
Q: With 0.05 significance level, H1: p > 0.5, and the value of test statistics is z = 1.25. Then
A:
Q: You are conducting a study to see if the probability of catching the flu this year is significantly…
A: H0:p=0.89H1:p≠0.89α = 0.005n = 213x = 204
Q: Let's examine the mean of the numbers 1, 2, 3, 4, 5, 6, 7, and 8 by drawing samples from these…
A: " Since you have posted a question with multiple sub-parts, we will solve the first three subparts…
Trending now
This is a popular solution!
Step by step
Solved in 4 steps with 1 images
- You wish to test the following claim (Ha) at a significance level of a = 0.002. = Ho: P₁ Ha: P1 P2 P2 You obtain a sample from the first population with 594 successes and 78 failures. You obtain a sample from the second population with 558 successes and 44 failures. The test statistic is... O in the critical region not in the critical region critical value = test statistic = This test statistic leads to a decision to... reject the null hypothesis fail to reject the null hypothesis [three decimal accuracy] [three decimal accuracy] As such, the final conclusion is that... O There is sufficient evidence to support that the first population proportion is less than the second population proportion. There is not sufficient evidence to support that the first population proportion is less than the second population proportion.The recidivism rate for convicted sex offenders is 13%. A warden suspects that this percent is different if the sex offender is also a drug addict. Of the 309 convicted sex offenders who were also drug addicts, 31 of them became repeat offenders. What can be concluded at the a = 0.01 level of significance? For this study, we should use Select an answer The null and alternative hypotheses would be: Ho: ? ✓ Select an answer H₁: ? Select an answer (please enter a decimal) (Please enter a decimal) The test statistic ? ✓ = The p-value = The p-value is ? va Based on this, we should [Select an answer the null hypothesis. Thus, the final conclusion is that ... (please show your answer to 3 decimal places.) (Please show your answer to 4 decimal places.) O The data suggest the population proportion is not significantly different from 13% at a = 0.01, so there is statistically insignificant evidence to conclude that the population proportion of convicted sex offender drug addicts who become…You wish to test the claim that the average IQ score is less than 100 at the .10 significance level. You determine the hypotheses are: Ho: μ=100Ho: μ=100 H1:μ<100H1:μ<100 You take a simple random sample of 73 individuals and find the mean IQ score is 95.2, with a standard deviation of 15.1. Let's consider testing this hypothesis two ways: once with assuming the population standard deviation is not known and once with assuming that it is known. Round to three decimal places where appropriate. Assume Population Standard Deviation is NOT known Assume Population Standard Deviation is 15 Test Statistic: t = Test Statistic: z = Critical Value: t = Critical Value: z = p-value: p-value: Conclusion About the Null: Reject the null hypothesis Fail to reject the null hypothesis Conclusion About the Null: Reject the null hypothesis Fail to reject the null hypothesis Conclusion About the Claim: There is sufficient evidence to support the claim that the average IQ…
- You are conducting a study to see if the probability of a true negative on a test for a certain cancer is significantly different from 0.85. You use a significance level of α=0.002α=0.002. H0:p=0.85H0:p=0.85 H1:p≠0.85H1:p≠0.85You obtain a sample of size n=415n=415 in which there are 361 successes.What is the p-value for this sample? (Report answer accurate to four decimal places.)p-value =Suppose the nutrition information on the package of Matilde's favorite brand of chips states that a serving size of 25 g equals about 12 chips. That means, on average, each chip should weigh 2.08 g. Matilde decides to test the accuracy of this serving size information. She plans to conduct a one-sample t-test with a significance level of a = 0.10 to test the null hypothesis, Ho: u = 2.08, against the alternative hypothesis, H1: µ # 2.08, where u is the average weight of a chip. Matilde selects a random sample of unbroken chips to weigh. She does not know the population standard deviation nor the distribution of chip weights, but she has confirmed that her sample does not contain any outliers. The summary statistics for her test are shown in the following table. Sample size Sample mean Sample standard deviation Test statistic Probability value P-value 45 2.04 0.14 -2.076 0.044 Based on these results, complete the following sentences to state the decision and conclusion of the test.…Test the claim that the proportion of men who own cats is significantly different than the proportion of women who own cats at the 0.2 significance level.The null and alternative hypothesis would be: H0:μM=μFH0:μM=μFH1:μM<μFH1:μM<μF H0:pM=pFH0:pM=pFH1:pM<pFH1:pM<pF H0:pM=pFH0:pM=pFH1:pM≠pFH1:pM≠pF H0:pM=pFH0:pM=pFH1:pM>pFH1:pM>pF H0:μM=μFH0:μM=μFH1:μM>μFH1:μM>μF H0:μM=μFH0:μM=μFH1:μM≠μFH1:μM≠μF The test is: right-tailed left-tailed two-tailed Based on a sample of 40 men, 25% owned catsBased on a sample of 20 women, 30% owned catsThe test statistic is: (to 2 decimals)The p-value is: (to 2 decimals)Based on this we: Reject the null hypothesis Fail to reject the null hypothesis
- You are conducting a study to see if the probability of a true negative on a test for a certain cancer is significantly different from 0.34. You use a significance level of α=0.005α=0.005. H0:p=0.34H0:p=0.34 H1:p≠0.34H1:p≠0.34You obtain a sample of size n=551n=551 in which there are 164 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 =Only 12% of registered voters voted in the last election. Will voter participation increase for the upcoming election? Of the 390 randomly selected registered voters surveyed, 62 of them will vote in the upcoming election. What can be concluded at the αα = 0.01 level of significance? For this study, we should use Select an answer t-test for a population mean z-test for a population proportion The null and alternative hypotheses would be: H0:H0: ? p μ Select an answer > < ≠ = (please enter a decimal) H1:H1: ? p μ Select an answer ≠ < = > (Please enter a decimal) The test statistic ? z t = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.) The p-value is ? ≤ > αα Based on this, we should Select an answer accept reject fail to reject the null hypothesis. Thus, the final conclusion is that ... The data suggest the population proportion is not significantly higher than 12% at αα = 0.01, so…A test of Ho: H=0 versus H₁: >0 is performed using a significance level of a=0.05. The P-value is 0.07. Part: 0/3 Part 1 of 3 (a) Is Ho rejected? Since P Part: 1/3 Part 2 of 3 Part: 2/3 ▾a, we do not reject Ho at the a= 0.05 level. (b) If the true value of μ is 0, is the result a Type I error, a Type II error, or a correct decision? The result is a correct decision Part 3 of 3 X X S (c) If the true value of His 4, is the result a Type I error, a Type II error, or a correct decision? S Español
- You wish to test the following claim (Ha) at a significance level of a = Ho: P₁ = P2 Ha: P₁ P2 You obtain a sample from the first population with 120 successes and 403 failures. You obtain a sample from the second population with 39 successes and 278 failures. The test statistic is... in the critical region O not in the critical region critical value = ± test statistic = This test statistic leads to a decision to... reject the null hypothesis fail to reject the null hypothesis = 0.005. O There is not sufficient evidence to support second population proportion. [three decimal accuracy] [three decimal accuracy] As such, the final conclusion is that... There is sufficient evidence to support that the first population proportion is not equal to the second population proportion. first population proportion not equal to theThree students, an athlete, a fraternity member, and an honors student, record the number of hours they slept each night for 20 nights. O JMP Applet imp ? Oneway Analysis of Sleep Hours By Student Oneway Analysis of Sleep Hours By Student 10 Oneway Anova 14 Summary of Fit 12 Rsquare 0.024506 10- Adj Rsquare Root Mean Square Error Mean of Response Observations (or Sum Wgts) -0.00072 1.99517 7.7 60 Analysis of Variance Sum of Mean F Prob > Source DF Squares Square Ratio F 2 Athiete Frat Honors Student 2 5.70000 2.85000 0.7180 0.4931 Student Error 57 226.90000 3.98070 C. Total 59 232.60000 Oneway Anova Means for Oneway Anova Std Lower Upper 95% Summary of Fit Level Number Mean Error 95% Athlete 20 8.10000 0.44813 7.2086 8.9934 Rsquare 0.024506 Frat 20 7.65000 0.44813 6.7588 8.5434 Adj Rsquare Root Mean Square Error Mean of Response Observations (or Sum Wgts) -0.00972 Honors 20 7.35000 0.44813 6.4586 8.2434 1.99517 Std Error uses a pooled estimate of error variance 7.7 60 Analysis of…You are conducting a study to see if the probability of a true negative on a test for a certain cancer is significantly different from 0.27. You use a significance level of α=0.001. H0:p=0.27H0:p=0.27 H1:p≠0.27H1:p≠0.27You obtain a sample of size n=406n=406 in which there are 97 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) αα greater than αα This test statistic leads to a decision to... reject the null accept the null fail to reject the null As such, the final conclusion is that... There is sufficient evidence to warrant rejection of the claim that the probability of a true negative on a test for a certain cancer is different from 0.27. There is not sufficient evidence to warrant rejection of the claim that the probability of a true negative on a test for a…