Hypotheses for a statistical test are given, followed by several possible confidence intervals for different samples. In each case, use theconfidence interval to state a conclusion of the test for that sample and give the significance level used.Hypotheses: Ho :p = 0.7 vs Ha:p + 0.7(a) 95 % confidence interval for p: 0.55 to 0.85Conclusion:v HoSignificance level:(b) 95 % confidence interval for p: 0.84 to 0.90Conclusion:HoSignificance level:(c) 99 % confidence interval for p: 0.66 to 0.82Conclusion:НоSignificance level:

Given that Null and alternative hypothesis. H0 : p=0.7 vs Ha :p≠0.7

Answered: Hypotheses for a statistical test are…

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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If a 90% confidence interval for the difference of proportions contains some positive and some negative values, what can we conclude about the relationship between p1 and p2 at the 90% confidence level? There is a positive difference between p1 and p2. There is no difference between p1 and p2. There is a negative difference between p1 and p2. We cannot make a conclusion about the relationship between p1 and p2.
The University of Illinois decided to conduct a study at their university. The 90% confidence interval for the true difference in proportions between undergraduates and graduates is (−0.0119, 0.1885). Without doing any calculations, what can you say about the p-value of a TWO-SIDED test? choice the best correct answer.Group of answer choices a.p-value > 0.10 b.p-value = 0.10 c.p-value < 0.10 d.There is not enough information to tell.
A normally distributed population is having standard deviation 2.4, a sample of 24 is taken randomly and the sample mean observed is 13.8 Find the 95% confidence interval. (round to 3 decimals)
The immunity rate for a person who received the vaccine was .07% (3 people out of 428 people) while the rate for those who were in the placebo group was 2.3% (10 people out of 426 people). Construct a 95% confidence interval for the difference in immunity rate between vaccine group and the placebo group.
A poll reported that only 1316 out of a total of 1746 adults in a particular region said they had a "great deal of confidence" or "quite a lot of confidence" in the military. Assume the conditions for using the CLT are met. Complete part (a) (a) Find a 95% confidence interval for the proportion that express a great deal of confidence or quite a lot of confidence in the military, and interpret this interval. The 95% confidence interval for the proportion that express a great deal of confidence or quite a lot of confidence in the military is: ( ? , ? )
Step 2 (b) Which of the two intervals conveys more precise information about the value of the population proportion? Recall that a smaller standard error of results in a narrower confidence interval. A narrower confidence interval is then more precise. The width of Interval 1, (0.27, 0.35), is 0.35 0.27 = and the width of Interval 2, (0.30, 0.34), is 0.34 -0.30 = Submit Skip (you cannot come back) Therefore, --Select--- is the narrower and more precise interval.
A 95% confidence interval for the population mean is 18 < mu < 24. What is the sample mean?
Find the value for each ta/2 Prompts Submitted Answers n = 18 for the 99% confidence interval for the Choose a match mean. n = 10 for the 90% confidence interval for the Choose a match mean. n = 15 for the 98% confidence interval for the Choose a match mean.
Suppose you are planning an experiment and a sample has yet been selected. For this experiment you plan on taking a SRS of 50 mice with pancreatic cancer measuring a particular hormone level. What would be the impact on a 95% confidence interval calculated from the experiment on these mice if instead of a SRS of 50 mice, a SRS of 200 mice were taken?
(i)The 95% Confidence Interval for an unknown population mean is calculated using a sample size of 64 and is presented as (273, 663). Determine the sample mean and the population standard deviation. (ii) Two students, A and B, from different countries take a similar, though not identical, psychometric test. The test also has a different marking scheme. Below are the student marks, country mean and country standard deviation of marks. Which student did best in their country and why? Explain your answer.

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