Please answer 1 B 34B Lcom/courses/2177802/assignments/13744575Test the claim that ui is less than u2. A random sample of size 24 yields a1 = 17.98 and s = 1, while arandom sample of size 24 yields 2 = 18.6 and s = 1.6. Use a = 0.10.1. The population distribution requirement for this test is:O Need a normally distributed population since this is a T-testO Need a normally distributed population since n1 and n2 < 30O None since this is a Z-testO None since ni and n2 > 30The hypotheses are:Ho:µ1 = H2; Ha:µ1 ± µ2O Ho:µ < Hz; Ha:µ > µzO Ho: µ > Hz; Ha:µ1 < µzO Ho:p1 < P2; Ha:p1 > p2O Ho:p1 = p2; Ha:p1 # P2O Ho:p1 2 P2; Ha:p1 < p22. This is a O twoO leftO right tailed test and the distribution used isOZ since testing two proportionsOZ since both o values are knownOT since both o values are not knownThe Degrees of Freedom (use the simple estimate discussed in the notes, not the messy formula) areON/A; this is a Z-test apsThe Degrees of Freedom (use the simple estimate discussed in the notes, not the messy formula) areON/A; this is a Z-testO 23O 243. The STS (round to 3 decimals) is: 1.67 XThe P-value (round to 4 decimals) is: 1.319 ×4. The decision at a = 0.10 is:O Do not reject Ho since P > aO Reject Ho since P > aO Do not reject Ho since P < aO Reject Ho since P < aThe conclusion is:O There is sufficient evidence to conclude that µj is less than µ2O There is insufficient evidence to conclude that µi is less than µ2O There is sufficient evidence to conclude that µi is not less than µ2O There is insufficient evidence to conclude that µi is not less than µ2Submit QuestionMacBook ProSearch or tynoLIDI

Given Information: Sample 1: Sample size n1=24 Sample mean x¯1=17.98 Sample standard deviation s1=1…

Answered: Please answer 1 B 3 4B

Math

Statistics

Please answer 1 B 3 4B

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

We have provided summary statistics for independent simple random samples from two populations. Preliminary data analyses indicate that the variable under consideration is normally distributed on each population. Decide, in each case, whether use of the pooled t-test and pooled t-interval procedure is reasonable. Explain your answer. x1 = 468.3, s1 = 38.2, n1 = 6, x2 = 394.6, s2 = 84.7, n2 = 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 0.10 significance level for both parts Treatment Placebo u u1 u2 n 31 36 x (mean) 2.39 2.66 s 0.58 0.95 a. Test the claim that the two samples are from populations with the same mean. What are the null and alternative hypotheses? b) what is the test statistics, and p-value? C) Construct a confidence interval suitable for testing the claim that the two samples are from populations with the same mean. do we reject or fail to reject
Based on a random sample or 25 units or product X, the average weight is 105.2 lb and the sample standard deviation is 10.08 lb. we would like to decide if there is enough evidence to establish that the average weight for the population of product X is greater than 100 lb. assume the population is normally distributed, using the p-value method in the steps below, test the researchers claim at 1% significance level. a. State the null and alternative hypothesis for this test b. Calculate the statistic c. Find the p-value d. Based on your calculations, do you reject or fail to reject? e. Is there enough evidence to conclude the average weight of the population of product C is greater than 100 lb?
Conduct a test at the α=0.10 level of significance by determining Assume the samples were obtained independently from a large population using simple random sampling. Test whether p1>p2. The sample data are: x1=125, n1=259, x2=144, n2=311 (b) Determine the test statistic z0=?
All house sales transactions (in R1000) concluded in two cities during a particular week are checked. The selling price of each house is noted. The following information is obtained:Town ATown Bn1=51n2=34x̄1=13585x̄2=13600σ2=1024σ2=1024 Is it true that, on average the houses in town B are cheaper than the one in town A at 1% level of significance? Calculate the p-value for this test. Assume that samples are drawn from a normal population
Test the null hypothesis that ros has no effect on salary against the alternative that ros has a positive effect. Carry out the test at the 10% significance level. Hint use t distribution with df = ∞,
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. Treatment Placebo μ μ1 μ2 n 26 32 x 2.38 2.63 s 0.85 0.57 a. Test the claim that the two samples are from populations with the same mean. What are the null and alternative hypotheses? A. H0: μ1<μ2 H1: μ1≥μ2 B. H0: μ1=μ2 H1: μ1≠μ2 Your answer is correct. C. H0: μ1=μ2 H1: μ1>μ2 D. H0: μ1≠μ2 H1: μ1<μ2 The test statistic, t, is negative 1.28−1.28. (Round to two decimal places as needed.) The P-value is 0.2060.206. (Round to three decimal places as needed.) State the conclusion for the test. A.…
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 0.10 significance level for both parts. Treatment Placebo μ μ1 μ2 n 31 37 x 2.38 2.66 s 0.61 0.96 a. Test the claim that the two samples are from populations with the same mean. 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 nothing. ? (Round to two decimal places as needed.) The P-value is nothing.? (Round to three decimal places as needed.) State the conclusion for the test. A. Fail to reject the…
Researchers are conducting a pooled, right-tailed, two-mean hypothesis test at a 5% significance level. The two samples have sizes n1=22 and n2=15. The next step for the researchers is to find the critical value(s) for the hypothesis test. Determine the critical value(s) for this test. df...35363738t0.10…1.3061.3061.3051.304t0.05…1.6901.6881.6871.686t0.025…2.0302.0282.0262.024t0.01…2.4382.4342.4312.429t0.005…2.7242.7192.7152.712 Select all correct answers. Select all that apply: −1.69 −1.688 −1.687 1.687 1.688 1.69 QUESTION 3 Researchers are conducting a pooled, left-tailed, two-mean hypothesis test at a 1% significance level. The two samples have sizes n1=19 and n2=14. The next step for the researchers is to find the critical value(s) for the hypothesis test. Determine the critical value(s) for this test.…
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 0.05 significance level for both parts. Treatment Placebo μ μ1 μ2 n 27 39 x 2.38 2.65 s 0.87 0.61 a. Test the claim that the two samples are from populations with the same mean. 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 Your answer is correct. The test statistic, t, is (Round to two decimal places as needed.)
A data set lists earthquake depths. The summary statistics are n=500, x=4.39km, s=4.61 km. Use a 0.01 significance level to test the claim of a seismologist that these earthquakes are from a population with a mean equal to 4.00. Assume that a simple random sample has been selected. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim.
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. Treatment Placebo μ μ1 μ2 n 29 31 x 2.35 2.66 s 0.94 0.54 a. Test the claim that the two samples are from populations with the same mean. What are the null and alternative hypotheses?