Instructor-created questionQuestion Help ▼2:Treatment PlaceboA study was done using a treatment group and a placebo group. The results are shown in the table. Assume that the two samples areindependent simple random samples selected from normally distributed populations, and do not assume that the population standarddeviations are equal. Use a 0.01 significance level to test the claim that the two samples are from populations with the same mean asfollows,H125302.660.52IX2.340.92orWhat are the null and alternative hypotheses?O A. Ho: H1=H2O B. Ho H1 H2H1: H1 H2H1 P1 H2H1 P12H2Using 1 less than the smaller sample size as an estimate of the degrees of freedom,, find the lower critical value from the t-table.| (Round to three decimal places as needed.)ontentsSuccessUsing 1 less than the smaller sample size as an estimate of the degrees of freedom, find the upper critical value from the t-table.edia LibraryClick to select your answer(s) and then click Check Answer.ase OptionsAll parts showingClear AllCheck Answerse Tools<.CpeSC

Name: Instructor-created questionQuestion Help ▼2:Treatment PlaceboA study
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Description: Instructor-created questionQuestion Help ▼2:Treatment PlaceboA study was done using a treatment group and a placebo group. The results are shown in the table. Assume that the two samples areindependent simple random samples selected from normally di

Solution: Given information: n1= 25 Sample size of treatment n2= 30 Sample size of placebox1=2.34…

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independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Use a 0.01 significance level to test the claim that the two samples are from populations with the same mean as follows. In 25 30 2.34 2.66 IS 0.92 0.52 What are the null and alternative hypotheses? O A. Ho: H1= H2 O B. Ho: H1# H2 H1: H1#H2 O C. Ho: H1= H2 O D. Ho: H1 H2 H1: H1242 Using 1 less than the smaller sample size as an estimate of the degrees of freedom, find the lower critical value from the t-table. |(Round to three decimal places as needed.) Using 1 less than the smaller sample size as an estimate of the degrees of freedom, find the upper critical value from the t-table. ry Click to select your answer(s) and then click Check Answer

independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Use a 0.01 significance level to test the claim that the two samples are from populations with the same mean as follows. In 25 30 2.34 2.66 IS 0.92 0.52 What are the null and alternative hypotheses? O A. Ho: H1= H2 O B. Ho: H1# H2 H1: H1#H2 O C. Ho: H1= H2 O D. Ho: H1 H2 H1: H1242 Using 1 less than the smaller sample size as an estimate of the degrees of freedom, find the lower critical value from the t-table. |(Round to three decimal places as needed.) Using 1 less than the smaller sample size as an estimate of the degrees of freedom, find the upper critical value from the t-table. ry Click to select your answer(s) and then click Check Answer

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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a. What are the null and alternative hypotheses? b. determine the test statistic c. determine the p-value
Given in the table are the BMI statistics for random samples of men and women. Assume that the two samples are independent simple random D samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. Use a 0.05 significance level for both parts. n X 5 QUEEN Reject the null hypothesis. There is not sufficient evidence to warrant rejection of the claim that men and women have the same mean BMI. c. Reject the null hypothesis. There is sufficient evidence to warrant rejection of the claim that men and women have the same mean BMI. Fail to reject the null hypothesis. There is sufficient evidence to warrant rejection of the claim that men and women have the same mean BMI. b. Construct a confidence interval suitable for testing the claim that males and females have the same mean BMI. 04-4³0 (Round to three decimal places as needed.) Male BMI Female BMI H 41 27.2986 8.038297 1₂ 41 24.2674 4.558194
S - A study was done using a treatment group and a placebo group. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. Use a 0.01 significance level for both parts. a. Test the claim that the two samples are from populations with the same mean. What are the null and alternative hypotheses? OA. Ho: H₁ = 42₂ H₁: Hy > H₂ @ View an example Get more help. 2 C. Ho: H₁ = 4₂ H₁: Hy #4₂ The test statistic, t, is -1.32. (Round to two decimal places as needed.) The P-value is (Round to three decimal places as needed.) W S X command # 3 80 F3 E D с $ 4 a FA R F % 5 V FS T G 6 B MacBook Air & FG Y H & 7 N 8 41 F7 U J OB. Ho: 2 Η.: μη Σμη OD. Ho: H₁ H₂ H₁ H₁ H₂ * 8 M DII FO I ( 9 K DD F9 O < I ) O L command 4 F10 P . - : t ; Clear all option F11 { [ + ? 1 = 3CX5 Treatment Placebo H₂ 35 an Check answer…
1. A population has the numbers 2, 4, 6, 8, 10, 12. Then two samples are taken at random and without replacement. If it is known µ-7. Find: a. Population variance (0²) b. The mean standard deviation of the sample (ox²)
65 homeless people in San Jose were asked their age. The sample mean age was 33.2 years. Let x be a random variable representing ages of homeless people in San Jose. Assume that x has a normal distribution and o = 7.3 years. Do the data indicate that the mean age of the population of homeless people in San Jose is less than 35 years old? Use a = 0.05. Identify the following in your answer. 1. Identify the null hypothesis Ho and alternate hypotheses H, for the problem. 2. Identify the sample statistic, test statistic, p-value and calculator key used: Sample Statistic (sample mean) (Stated in problem) = Test Statistic (z) (Round to two decimal places) %3D P-value: (Round to four decimal places) = Calculator key used: 3. Identify the significance level and determine if you reject or fail to reject the null hypothesis. significance level = Do you reject or fail to reject Ho ? 4. State your conclusion. Upload your answer. Remember you can only upload one document. Upload Choose a File
14 A study was done using a treatment group and a placebo group. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. Use a n 0.10 significance level for both parts. X a. Test the claim that the two samples are from populations with the same mean. What are the null and alternative hypotheses? OA. Ho: H₁ H₂ H₁: H₁ H₂ OC. Ho: H=H2 H₁: H₁ H₂ The test statistic, t, is (Round to two decimal places as needed.) The P-value is. (Round to three decimal places as needed.) State the conclusion for e test. GELER OB. Ho: H1 H2 H₁: Hy > H₂ Treatment Placebo Hy 1/2 OD. Ho: H₁ H₂ H₁: Hy
24) Many students brag that they have morethan 500 friends on a social media website.To verify this, a researcher selected a randomsample of size 35 and found that on average, students had about 535 friends. Further assume the (population) standard deviation is 70. a) Find the value of the test statistic in the above case.A. 2.06B. 2.54C. 2.96D. 3.34E. None of the above b) Find the p-value of the above test.A. 0.1 < pB. 0.05 < p < 0.1C. 0.01 < p < 0.05D. 0.005 < p < 0.01E. 0.001 < p < 0.005
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answer the second question.
Westjet claims that it's avearage time to fly to Toronto from Thunder Bay is 121 minutes. A random sample of 29 flights from Thunder Bay to Toronto were observed and yeilded a mean of 140 minutes. Assuming that o = 3.1 do we have enough evidence to show that the mean flight is more than 121 minutes? Use a = 0.1 and use our tables. Select the correct null and alternative hypotheses: OA. Ho: X= 140,HA: X 121 OF. Ho X = 140,H₁ : X > 140 OG. None of the above Select the type of distribution to be used in this question: OA. Z-distribution B. t-distribution OC. Chi-Square distribution OD. None of the above The rejection region for this test is: OA. (-∞, -1.28) OB. (1.96,∞) OC. (1.645, ∞) OD. (1.28, ∞) OE. (-∞, -1.96) OF. (-∞, -1.645) OG. (-∞, -1.96) U (1.96,∞) OH. (-∞, -1.28) U (1.28,00) OI. (-∞, -1.645) U (1.645, ∞) OJ. None of the above Test statistic = The conclusion for this test is: OA. Fail to Reject Ho OB. Reject Ho OC. Fail to Reject HA OD. Reject HA OE. None of the above