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=8Identify the null and alternative hypotheses. Choose the correct answer below.OAH: 14<0H₂:14 20OC. H₂: #0OE Ho: 0H₂:50The test statistic is t=(Round to two decimal places as needed.)B. Ho: d=0H₂: 170OD. HH 20H₂ P<0OF. Ho so

Given,Claim: Level of significance, α = 0.01n = 8

Answered: Test the claim below about the mean of…

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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Statistics students believe that the mean score on a first statistics test is 65. The instructor thinks that the mean score is higher. She samples 10 statistics students and obtains the scores: Grades 83.2 69 65 64.3 64.3 74.4 69 73.5 62.7 61.9 Test grades are believed to be normally distributed.Use a significance level of 5%. A. State the alternative hypothesis: HA:HA: μ≠65μ≠65 μ>65μ>65 μ<65μ<65 B. State the mean of the sample: (Round answer to two decimal places.) ________ C. State the standard error of the sample means: (Round answer to four decimal places.) ________ D. State the test statistic: t= _______ (Round answers to three decimal places. E. State the p-value: _________ (Round answers to three decimal places.)
Test the claim about the difference between two population means u, and µ, at the level of significance a. Assume the samples are random and independent, and the populations are normally distributed. H1 SH2; a = 0.05. Assume o? #o? Sample statistics: X1 = 2403, s, = 171, n, = 15 and X2 = 2299, s2 = 55, n2 = 11 Claim: Identify the null and alternative hypotheses. Choose the correct answer below. B. Ho: H1 2 H2 Hại H1 H2 O A. Ho: H1 = H2 Ha: H1 # H2 С. Но # 2 Hai H1 = H2 E. Ho: H1 H2 Ha: H1 SH2 Find the standardized test statistic t. t= (Round to two decimal places as needed.) Find the P-value. P = (Round to three decimal places as needed.) Decide whether to reject or fail to reject the null hypothesis and interpret the decision in the context of the original claim. Ho. There enough evidence at the 5% level of significance to reject the claim.
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: H. 20; a = 0.05. Sample statistics: d= - 2.2, s, = 1.5, n= 14 Identify the null hypothesis by writing its complement. OB. Ho: Ha s0 OA Ho: Ha #0 H: Ha =0 OD. Ho: Ha0 VE. Ho: Ha20 Ha: Hd <0 The test statistic is t= (Round to two decimal places as needed.)
A sample of 3 measurements are taken and recorded: a =8, y = 10 and z = 7 The sample mean is: x = = 8.33 Fill in the table below. aj (a; - x)2 Ex: 5.34 Ex: 5.34 Ex: 5.34 82 = (z-z)*+(y-a)* +(z-z) Ex: 5.34 (z-2)*+(y-z)* +(z-) = Ex: 5.34
MY NOTES Bags of a certain brand of tortilla chips claim to have a net weight of 12.5 oz. A representative of a consumer advocate group wishes to see if there is any evidence that the mean net weight is less than advertised and so intends to test the hypotheses H0: μ = 12.5, HA: μ < 12.5. To do this, he selects 24 bags of tortilla chips of this brand at random and determines the net weight of each. Data reveals a bell-shaped histogram, a sample mean of 12.31 ounces, and a standard deviation of 0.48 ounces.(a) What type of test is this? Two-sided, one-sample test Two-sided, two-sample test One-sided, two-sample test One-sided, one-sample test (b) Given the test statistic = -1.94 and α = 0.05, which of the following statements is the decision? Reject H0; conclude the bags are underweight. Fail to reject H0; do not conclude the bags are underweight. Fail to reject H0; conclude the the bags are underweight. Reject H0; conclude the bags are overweight.
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: H 0 H Ha sO O E. Ho Hd0 F. Ho: Hg20 The test statistic is t= (Round to two decimal places as needed.) Enter your answer in the answer box and then click Check Answer. parts remaining Clear All Check Answer les7e_ppt_08_03.pptx Open file Show all 2:28 PM P Type here to search A di 2/21/2021 ho * h2 ) break end prt sc inser f7 f9 16 1. fe多 home esc 24 4 %3D 3. 5. 6. 7. 8.
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 В. Но На > 0 Ha: Ha s0 O C. Ho: Ha = 0 Ha: Hd #0 D. Ho: Ha <0 Ha: Hd 20 O E. Ho: Hd + 0 Ha: Hd F. Ho: Hd 20 Ha: Hd = 0 <0 The test statistic is t= (Round to two decimal places as needed.)
4
Given in the table are the BMI statistics for random samples of men and women. 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 0.05 significance level for both parts. Male BMI Female BMI μ μ1 μ2 n 41 41 x 28.3981 26.4624 s 7.246507 5.820596 a. Test the claim that males and females have the same mean body mass index (BMI). What are the null and alternative hypotheses? A. H0: μ1=μ2 H1: μ1≠μ2 B. H0: μ1≥μ2 H1: μ1<μ2 C. H0: μ1≠μ2 H1: μ1<μ2 D. H0: μ1=μ2 H1: μ1>μ2 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 the test. A. Fail to reject the null…
Male BMI Female BMI se H2 47 Given in the table are the BMI statistics for random samples of men and women. 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 0.05 significance level for both parts. n 47 26.3343 27.3646 8.781948 se 5.636805 se What are the null and alternative hypotheses? se O B. Ho H1 = H2 H1 H1 #H2 O A. Ho H1 H2 H1: H1 H2 O D. H, H1 #H2 H1: H1 < H2 se The test statistic, t, is. (Round to two decimal places as needed.) se The P-value is (Round to three decimal places as needed.)
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Find the test statistic, t, to test the hypothesis that u, u,. Two samples are randomly selected and come from populations that are normal. The sample statistics are given below. Round to three decimal places. n= 11 n2 = 18 X =6.7 X2 = 7.1 S1=0.76 S2 = 0.51 O A. - 1.546 B. -1.821 C. - 2.123 S D. -1.326 eting Click to select your answer. Type here to search hp 立

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