The data for a random sample of 8 paired observations areshown in the table to the right.a. What are the appropriate null and alternative hypothesesto test whether the mean for population 2 is larger than thatfor population 1?b. Conduct the test identified in part a using a= 0.01.c. Find a 99% confidence interval for Hd. Interpret thisresult.d. What assumptions are necessary to ensure the validityof this analysis? PairPopulation 1Population 2463335四%45日8512N 3 4 6 6 70

Answered: Image /qna-images/answer/62c6d763-c543-46c3-afdd-b42c69f74ed0.jpg

Answered: The data for a random sample of 8…

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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Let n1=100, X1=60, n2=100, and X2=80. a. Determine the zstat, based on the difference p1−p2, and the p-value. b.Determine a conclusion c. Construct a 95% confidence interval estimate of the difference between the two population proportions.
do fast ..with explanation both require..
An analyst stated that all else equal, increasing sample size will decrease both the standard error and the width of the confidence interval. The analyst's statement is correct is regard to: a. The standard error, but incorrect in regard to the confidence interval b. both the standard error and confidence interval c. The confidence interval but incorrect in regard to the standard error
A doctor wants to estimate the mean HDL cholesterol of all 20- to 29-year-old females. How many subjects are needed to estimate the mean HDL cholesterol within 3 points with 99% confidence assuming s=17.8 based on earlier studies? Suppose the doctor would be content with 99% confidence. How does the decrease in confidence affect the sample size required? a. A 99% confidence level requires _______ subject. b. 90% confidence level requires ________ subject. c.How does the decrease in confidence affect the sample size required? a.Decreasing the confidence level decreases the sample size needed. b.Decreasing the confidence level increases the sample size needed. c.The sample size is the same for all levels of confidence.
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Please answer questions 1, 2 & 3 . Thank you!
PLEASE ANSWER ASAP. The following results come from two independent random samples taken of two populations. Sample 1 Sample 2 N 50 N 30 X 13.4 X 11.6 S 2.3 S 3.1 a. What is the point estimate of the difference between the two population means? (to 1 decimal) b. Provide a 90% confidence interval for the difference between the two population means (to 2 decimals).( , ) c. Provide a 95% confidence interval for the difference between the two population means (to 2 decimals).
a. What are the null and alternative hypotheses? b. The test statistic, t, is c. The P-value is d. State the conclusion for the test. e. Construct a confidence interval suitable for testing the claim that the two samples are from populations with the same mean.
I only need part B
Here are summary statistics for randomly selected weights of newborn girls: n=217, x=31.7hg, s=6.5hg. Construct a confidence interval estimate of the mean. Use a 98% confidence level. Are these results very different from the confidence interval 29.6hg<μ<32.6hg with only 17 sample values, x=31.1hg, and s=2.4hg? What is the confidence interval for the population mean μ? hg < μ < hg (Round to one decimal place as needed.)
Can you please help me with this question?
Here are summary statistics for randomly selected weights of newborn girls: n=191, x=28.9 hg, s =7.8hg. Construct a confidence interval estimate of the mean. Use a 90% confidence level. Are these results very different from the confidence interval 27.1 hg<u<30.5 hg with only 13 sample values, x=28.8 hg, and s=3.5 hg? What is the confidence interval for the population mean u? Are the results between the two confidence intervals very different?

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