**Current Attempt in Progress**Use the normal distribution to find a confidence interval for a difference in proportions \( p_1 - p_2 \) given the relevant sample results. Assume the results come from random samples.A 90% confidence interval for \( p_1 - p_2 \) given that \( \hat{p}_1 = 0.20 \) with \( n_1 = 40 \) and \( \hat{p}_2 = 0.40 \) with \( n_2 = 120 \).Give the best estimate for \( p_1 - p_2 \), the margin of error, and the confidence interval.Round your answer for the best estimate to two decimal places and round your answers for the margin of error and the confidence interval to three decimal places.- **Best estimate:** [Input box]- **Margin of error:** [Input box]- **Confidence interval:** [Input box] to [Input box][Save for Later Button]Attempts: 0 of 4 used.

Method: using the proportion Z Statistic

Answered: Current Attempt in Progress Use the…

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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Use the normal distribution to find a confidence interval for a difference in proportions p1 – P2 given the relevant sample results. Assume the results come from random samples. A 99% confidence interval for p, – P2 given counts of 19 yes out of 200 sampled for Group 1 and 32 yes out 130 sampled for Group 2 Give the best estimate for p, – p2, the margin of error, and the confidence interval. Round your answers to three decimal places. Best estimate : Margin of error: i Confidence interval : i to i
please solve for the following
Use technology to construct the confidence intervals for the population variance o² and the population standard deviation σ. Assume the sample is taken from a normally distributed population. c=0.90, s² = 21.16, n = 29 The confidence interval for the population variance is ( ☐, ☐ ). (Round to two decimal places as needed.)
Use the normal distribution to find a confidence interval for a difference in proportions p¡ – P2 given the relevant sample results. Assume the results come from random samples. A 95% confidence interval for p, – pɔ given counts of 88 yes out of 120 sampled for Group 1 and 47 yes out 150 sampled for Group 2 Give the best estimate for p, - P2, the margin of error, and the confidence interval. Round your answers to three decimal places.
Traumatic Brain Injuries have been shown to affect brain volume. A psychologist measures the brain volume of N=8 TBI patients at 2 months and 12 months after their injuries. Evaluate the results of her data using α = .052tail. **Attached Image** a. Show how the 95% confidence interval was calculated. b. State the conclusion in APA format.
Please solve for the confidence interval and population standard deviation
PLEASE SHOW WORK.
n1=16 x‾1=124 s1=35 n2=12 x‾2=86 s2=31 Use this data to find the 98% confidence interval for the true difference between the population means. Assume that the population variances are not equal and that the two populations are normally distributed. Copy Data Step 2 of 3 : Find the margin of error to be used in constructing the confidence interval. Round your answer to six decimal places. Step 3 of 3 : Please also find the high and low endpoints and round to four decimal points.
You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals. From a random sample of 70 dates, the mean record high daily temperature in a certain city has a mean of 86.37°F Assume the population standard deviation is 14.38 F The 90% confidence interval is ( I) (Round to two decimal places as needed.) The 95% confidence interval is ( D (Round to two decimal places as needed.) Which interval is wider? Choose the correct answer below. The 90% confidence interval The 95% confidence interval Interpret the results. O A. You can be 90% confident that the population mean record high temperature is between the bounds of the 90% confidence interval, and 95% confident for the G50% intonial Click to select your answer(S). 180min ZoT oo
Use technology to construct the confidence intervals for the population variance o and the population standard deviation o. Assume the sample is taken from a normally distributed population. c= 0.90, s = 5.76, n = 26 The confidence interval for the population variance is ( ). (Round to two decimal places as needed.) The confidence interval for the population standard deviation is ( ). (Round to two decimal places as needed.)
You want to obtain a sample to estimate a population mean. based on previous evidence, you believe the population standard deviation is approximately 23.6 you would like to be 90% confidence that your estimate is within 1.8 of the true population mean. How large of a sample size is required
Construct a confidence interval of the population proportion at the given level of confidence. x=860, n = 1200, 95% confidence Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). BENGKE 202 The lower bound of the confidence interval is 691 (Round to three decimal places as needed.) The upper bound of the confidence interval is (Round to three decimal places as needed.) CON SEME ++ d kepad DAPA ...

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