You may need to use the appropriate appendix table or technology to answer this question.The following results come from two independent random samples taken of two populations.Sample 1Sample 2n, = 50n2 = 25X = 13.6X2 = 11.601 = 2.302 = 3(a) What is the point estimate of the difference between the two population means? (Use x, - x.)2.0(b) Provide a 90% confidence interval for the difference between the two population means. (Use x, - x,. Round your answers to two decimal places.)0.88to 3.12(c) Provide a 95% confidence interval for the difference between the two population means. (Use x, - x,. Round your answers to two decimal places.)0.67|x to 3.33

Answered: Image /qna-images/answer/353f8eb2-1c65-4115-af7a-a01d6bbcb980.jpg

The following results come from two independent random samples taken of two populations. Sample 1 Sample 2 n1 = 50 n2 = 25 x, = 13.6 x, = 11.6 o, = 2.3 o, = 3 (a) What is the point estimate of the difference between the two population means? (Use X1 - X2.) 2.0 (b) Provide a 90% confidence interval for the difference between the two population means. (Use x, - x,. Round your answers to two decimal places.) 0.88 to 3.12 (c) Provide a 95% confidence interval for the difference between the two population means. (Use x, - x,. Round your answers to two decimal places.) 0.67 to 3.33

The following results come from two independent random samples taken of two populations. Sample 1 Sample 2 n1 = 50 n2 = 25 x, = 13.6 x, = 11.6 o, = 2.3 o, = 3 (a) What is the point estimate of the difference between the two population means? (Use X1 - X2.) 2.0 (b) Provide a 90% confidence interval for the difference between the two population means. (Use x, - x,. Round your answers to two decimal places.) 0.88 to 3.12 (c) Provide a 95% confidence interval for the difference between the two population means. (Use x, - x,. Round your answers to two decimal places.) 0.67 to 3.33

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

Independent random samples were selected from population 1 and population 2. The following information was obtained from these samples: Population 1 Population 2 Sample Size 38 38 Sample Mean 24.3 22.9 Sample Std. Deviation 3.8 3.3 a) Find the 95% confidence interval for estimating the difference in the population means (µ1 - µ2).
8/10
Consider two independent random samples with the following results: n1=653x1=355n1=653x1=355 n2=597x2=201n2=597x2=201 Use this data to find the 90%90% confidence interval for the true difference between the population proportions. Step 1 of 3 : Find the point estimate that should be used in constructing the confidence interval. Round your answer to three decimal places.
Answer (1.32, 10.68), (1, 11)
Suppose you needed to test the claim that the two samples described below come from populations with the same mean. Assume that the samples are independent simple random samples. Sample 1: n1 = 13, a1 = 24, s1 = 7.55 Sample 2: n2 = 3, x2 = 21.9, s2 = 8.92 Find: (a) The estimated degree of freedom is (b) The standardized test statistic is (use Sample 1 - Sample 2)
You are part of a trivia team and have tracked your team's performance since you started playing, so you know that your scores are normally distributed with u = 88 and a = 15 Recently, a new person joined the team, and you think the scores have changed Sample data is: n = 28, sample mean = 72 Assuming a two tailed test, What is the test statistic (Z)?
A sample of n=41n=41 data values randomly selected from a normally distributed population has variance s2=30s2=30. Construct a 95% confidence interval for the population variance. Round your endpoints to one decimal place.
Given two independent random samples with the following results: n1=12x‾1=73s1=27n1=12x‾1=73s1=27 n2=12x‾2=102s2=22n2=12x‾2=102s2=22 Use this data to find the 95%95% confidence interval for the true difference between the population means. Assume that the population variances are equal and that the two populations are normally distributed. Step 1 of 3 : Find the point estimate that should be used in constructing the confidence interval.
A small shop is trying to compare the proportion of consumers who prefer buying a pre-made bread and those who prefer fresh bread. They randomly sample daily consumers and asked for their opinion. The shop is then decided to construct a 90% confidence interval for the difference of population proportion and found it equal to (-0.53 , 0.30). ii. using the interval, what is the decision for testing Hop1- P2=0 against H 1:P1- P270 at 10% significant levels OReject the null hypothesis OFail to reject the null hypothesis Ocannot be determine
7. What is the 95% confidence interval for the difference in the population means, µ1 - µ2, given the data from the two independent samples: n1 =56, x1= 58.2, s1= 4.3, n2=45, x2=60.2, s2=5.5 B. [-3.28 , -0.72] C. [-3.60, -0.40] D. [-3.65 , -0.35] A. [-3.96 , -0.04] 8. What is the 98% confidence interval for the difference in the population means, µ1 - µ2, given: n1= 22, x1= 41.4, s1= 5.9, n2= 19, x2= 43.2, s2= 6.5 D. [-3.48 , -0.12] B. [-3.07 , -0.53] A. [-3.12, -0.48] C. [-3.18, -0.42]
Two random samples are selected from two independent populations. A summary of the samples sizes, sample means, and sample standard deviations is given below: n1=51, x¯1=59.2, s1=5.5 n2=50,x¯2=71.4,s2=10.4 Find a 93% confidence interval for the difference μ1−μ2μ1−μ2 of the means, assuming equal population variances. Confidence Interval =
A random sample of size 16 is taken from a normal distribution with population variance 2.56 and sample mean is 130, find the margin error for 95% confidence interval of population mean a. 1.784 O b. 1.254 O . 0.784 O d. 0.194