Identify the test statistic.Identify the P-valueconstruct the 95% confidence interval for p1−p2 In a random sample of males, it was found that 18 write with their left hands and 221 do not. In a random sample of females, it was found that 72 write with their left hands and 443 do not. Use a 0.05 significance level to test the claim that the rate of left-handedness among males is less than that among females. Complete parts (a) through (c) below.a. Test the claim using a hypothesis test.Consider the first sample to be the sample of males and the second sample to be the sample of females. What are the null and alternative hypotheses for the hypothesis test?- A. \(H_0: p_1 \neq p_2\) \(H_1: p_1 = p_2\)- B. \(H_0: p_1 \geq p_2\) \(H_1: p_1 \neq p_2\)- C. \(H_0: p_1 = p_2\) \(H_1: p_1 < p_2\) (Selected)- D. \(H_0: p_1 \leq p_2\) \(H_1: p_1 \neq p_2\)- E. \(H_0: p_1 = p_2\) \(H_1: p_1 > p_2\)- F. \(H_0: p_1 = p_2\) \(H_1: p_1 \neq p_2\)Identify the test statistic.\(z = \square\) (Round to two decimal places as needed.)

To calculate: 1.Identify the test statistic. 2.Identify the P-value. 3.construct the 95%…

Answered: Identify the test statistic. Identify…

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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Q16 A recent study reported that a 95% confidence interval for the mean travel times to work of employees in UAE is (22 minutes, 28 minutes). The interval was computed based on a random sample of 400 employees. Which one of the following statements is the correct interpretation of this interval? We are 95% confident that mean travel times to work of the employees in the selected sample lies between 22 and 28 minutes. We are 95% confident that mean travel times to work of all employees in UAE is between 22 and 28 minutes. The probability that the mean travel times to work of all employees in UAE lies between 22 and 28 minutes is 0.95. 95% of all employees in UAE travel between 22 to 28 minutes to their work.
Pain after surgery: In a random sample of 42 patients undergoing a standard surgical procedure, 15 required medication for postoperative pain. In a random sample of 90 patients undergoing a new procedure, only 11 required pain medication. Part: 0 / 2 Part 1 of 2 (a) Construct a 95% confidence interval for the difference in the proportions of patients needing pain medication between the old and new procedures. Let p, denote the proportion of patients who had the old procedure needing pain medication. Use tables to find the critical value and 1 round the answer to at least three decimal places. A 95% confidence interval for the difference in the proportions of patients needing pain medication between the old and new procedures is
A study of 420,048 cell phone users found that 137 of them developed cancer of the brain or nervous system. Prior to this study of cell phone use, the rate of such cancer was found to be 0.0256% for those not using cell phones. Complete parts (a) and (b). a. Use the sample data to construct a 90% confidence interval estimate of the percentage of cell phone users who develop cancer of the brain or nervous system. enter your response here%<p<enter your response here% (Round to three decimal places as needed.) b. Do cell phone users appear to have a rate of cancer of the brain or nervous system that is different from the rate of such cancer among those not using cell phones? Why or why not? A. No, because 0.0256% is included in the confidence interval. B. Yes, because 0.0256% is included in the confidence interval. C. Yes, because 0.0256% is not included in the confidence interval. D. No, because 0.0256% is not…
Construct a 95% confidence interval for p1 - p2 for a survey that finds 30% of 240 males and 41% of 200 females are opposed to the death penalty. Group of answer choices a.(-0.200, -0.021) b.(-1.532, 1.342) c.(-1.324, 1.512) d.(-0.561, 0.651)
n a study of speed dating, male subjects were asked to rate the attractiveness of their female dates, and a sample of the results is listed below (1 =not attractive; 10 =extremely attractive). Construct a confidence interval using a 99% confidence level. What do the results tell about the mean attractiveness ratings of the population of all adult females? 5,9,1,9,6,4,7,8,8,8,4,8 What is the confidence interval for the population mean μ?
Pain after surgery: In a random sample of 54 patients undergoing a standard surgical procedure, 15 required medication for postoperative pain. In a random sample of 94 patients undergoing a new procedure, only 16 required pain medication. Part: 0/ 2 Part 1 of 2 (a) Construct a 99% confidence interval for the difference in the proportions of patients needing pain medication between the old and new procedures. Let p, denote the proportion of patients who had the old procedure needing pain medication. OL Use tables to find the critical value and round the answer to at least three decimal places. A 99% confidence interval for the difference in the proportions of patients needing pain medication between the old and new procedures is
Online News In a Harris poll of 2036 adults, 40% said that they prefer to get their news online. Construct a 95% confidence interval estimate of the percentage of all adults who say that they prefer to get their news online. Can we safely say that fewer than 50% of adults prefer to get their news online?
In a survey of 2490 golfers, 22% said they were left-handed. The survey's margin of error was 4%. Construct a confidence interval for the proportion of left-handed golfers. O (0.17, 0.27) (0.18, 0.26) ○ (0.18, 0.22) ○ (0.26, 0.30)
A clinical trial is conducted comparing a new pain reliever for arthritis to a placebo. Participants are randomly assigned to receive the new medication or a placebo. The outcome is pain relief within 30 minutes. Generate a 95% confidence interval for the proportion of patients on the new medication who report paint relief. Generate a 95% confidence interval for the difference in proportions of patients who report pain relief. Pain Relief No Pain Relief New Medication 44 76 Placebo 21 99
In a trial of 275 patients who received 10-mg doses of a drug daily, 44 reported headache as a side effect. From the information above, construct and interpret a 95% confidence interval or the population proportion of patients who received the drug and report a headache as a side effect. One can be ____ % confident that the proportion of patients who receive the drug and report a headache as a side effect is between ___ and ___ .

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Identify the test statistic. Identify the​ P-value construct the 95​% confidence interval for p1−p2

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