Q2.[5 points]: Two random samples taken from two normal populations yielded the following information:SampleSample sizeSample variancesi = 53s를 %3D321n1 = 16n2 = 21i.Find the test statistic FFind the degrees of freedom dfl and df2.Perform the test the hypotheses H,:o = ož vs. H,:o > ož at the 5% level ofsignificance.ii.iii.

Name: Q2.[5 points]: Two random samples taken from two normal populations y
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: Q2.[5 points]: Two random samples taken from two normal populations yielded the following information:SampleSample sizeSample variancesi = 53s를 %3D321n1 = 16n2 = 21i.Find the test statistic FFind the degrees of freedom dfl and df2.Perform the test t

Answered: Image /qna-images/answer/c019d7ef-b8da-4576-941a-40303337ff79.jpg

Math

Statistics

Q2.[5 points]: Two random samples taken from two normal populations yielded the following information: Sample Sample size Sample variance si = 53 s를 3D 32 1 n = 16 n2 = 21 i. Find the test statistic F Find the degrees of freedom dfl and df2. Perform the test the hypotheses H,:o? = ož vs. H,:of > ož at the 5% level of ii. iii. significance.

Q2.[5 points]: Two random samples taken from two normal populations yielded the following information: Sample Sample size Sample variance si = 53 s를 3D 32 1 n = 16 n2 = 21 i. Find the test statistic F Find the degrees of freedom dfl and df2. Perform the test the hypotheses H,:o? = ož vs. H,:of > ož at the 5% level of ii. iii. significance.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

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.
Find the p-value of a test-statistics for the difference between two means, paired samples, given a test-statistic of t= 2.015, : > 0, n=19.
One-Sample T: Test of u = 34 vs not 34 %3D Variable Мean StDev SE Mean T P 16 35.274 1.783 а. b. 0.012 c. How many degrees of freedom are there on the t- test statistic? d. At what level of significance can the null hypothesis be rejected? e. If the alternative hypothesis is µ > 34, would the P-value have been larger or smaller? v a. a. P-value would be smaller v b. b. 15 v C. с. 11.43 v d. d. 2.8581 е. e. 0.4458 f. P-value = 0.012 We reject the null hypothesis if the P-value
You have computed the test statistic for a test involving 2 independent means. The sample sizes were 15 and 20. The test statistic was t = 2.356 A. Compute the p value for a right tail test, using the more conservative method. Report to 4 decimal places.
Test the claim about the difference between two population means u, and u, at the level of significance a. Assume the samples are random and independent, and the populations are normally distributed. Claim: µ, =H2; a = 0.01 Population statistics: o, = 3.4, o2 =1.7 Sample statistics: X, = 15, n, = 27, X2 = 17, n2 = 30 Determine the alternative hypothesis. Ha: H1 H2 Determine the standardized test statistic. (Round to two decimal places as needed.) Determine the P-value. P-value = (Round to three decimal places as needed.) What is the proper decision? Enil to rninat U Thore ie not onounh cidencoot the 0L Inunl of eianiinonon tn minnt the olainn Click to select your answer(s). 2:24PM
Consider the following data on price ($) and the overall score for six stereo headphones tested by a certain magazine. The overall score is based on sound quality and effectiveness of ambient noise reduction. Scores range from 0 (lowest) to 100 (highest). Brand Price ($) Score 180 74 В 150 69 95 63 70 56 70 40 F 35 28 (a) The estimated regression equation for this data is ý = 25.870 + 0.291x, where x = price ($) and y = overall score. Does the t test indicate a significant relationship between price and the overall score? Use a = 0.05. State the null and alternative hypotheses. O Ho: Bo * 0 H: Bo = 0 O Ho: B1 20 Hoi Bq < 0 O Ho: Bo = 0 Hg: Bo 0 O Ho: B1* 0 H: B, = 0 O Ho: B, = 0 H: B1 = 0 Find the value of the test statistic. (Round your answer to three decimal places.) Find the p-value. (Round your answer to four decimal places.) p-value = What is your conclusion? O Do not reject H. We conclude that the relationship between price ($) and overall score is significant. O Do not reject…
The corrosive effects of various soils on coated and uncoated steel pipe was tested by using a dependent sampling plan. The data collected are summarized below, where d is the amount of corrosion on the coated portion subtracted from the amount of corrosion on the uncoated portion. Does this random sample provide sufficient reason to conclude that the coating is beneficial? Use a = 0.01 and assume normality. n- 40, Σd- 207, Σα? = 6199 (a) Find t. (Give your answer correct to two decimal places.) (ii) Find the p-value. (Give your answer correct to four decimal places.) (b) State the appropriate conclusion. O Reject the null hypothesis, there is significant evidence that the coating is beneficial. Reject the null hypothesis, there is not significant evidence that the coating is beneficial. Fail to reject the null hypothesis, there is significant evidence that the coating is beneficial. Fail to reject the null hypothesis, there is not significant evidence that the coating is beneficial.
For the hypothesis test Ho: u = 14 against H1:µ < 14 and variance known, calculate the P-value for the following test statistic: Z0 = - 1.96. Round your answer to three decimal places (e.g. 98.765). P-value
Test the claim about the difference between two population means H, and u2 at the level of significance a. Assume the samples are random and independent, and the populations are normally distributed. Claim: 41 SH2; a = 0.10. Assume o, #o, Sample statistics: X, = 2417, s, = 179, n, = 12 and X2 = 2296, s2 = 53, n2 = 10 Identify the null and alternative hypotheses. Choose the correct answer below. 대= 내 : "H OF. Ho: H1 2H2 Find the standardized test statistic t. (Round to two decimal places as needed.) Find the P-value. (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. V Ho. There V enough evidence at the 10% level of significance to reject the claim.
The following table shows the hours studied and corresponding test grade earned by students on a recent test. Calculate the correlation coefficient, r, and determine whether r is statistically significant at the 0.01 level of significance. Round your answer to the nearest thousandth. Critical Values of the Pearson Correlation Coefficient Hours Studied and Test Grades Hours Studied 0 0.5 2 2.25 3.25 3.5 3.75 3.75 4 5 1 1 81 Test Grade 72 64 68 79 85 82 72 99 87 84 97
Pls solve it quickly..
MM