Emma wants to estimate the percentage of people who use public transportation in a city. She surveys 140 individuals andfinds that 62 use public transportation.Find the confidence interval for the population proportion with a 99% confidence level.zo. 10 0.05 0.025 Iz0.01 0.0051.2821.645 1.960 2.3262.576Use the table of common z-scores above.· Round the final answer to three decimal places.Provide your answer below:

Given total number of individuals surveyed = 140 = nTotal number os people using public transport =…

Answered: Emma wants to estimate the percentage…

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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4b- Please solve all sub-part questions with steps. Note: A = 19 and B = 9099
Find the left and right critical values used in the confidence interval for the ratio of the population variances given the following sample statistics. Round your answer to four decimal places. n1=17, n2=10, s12=124.821, s22=62.41, 90% level of confidence
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Heights for teenage boys and girls were calculated. The mean height for the sample of 73 boys was 167 cm and the variance was 71. For the sample of 47 girls, the mean was 180 cm and the variance was 66. There is no reason to assume the variances would be equal. Estimate how much taller teenage boys are using a 96% confidence level. Express this in the (point estimate) ± (margin of error) format. Round answers to 2 decimal places. H
Construct a 95% confidence interval for the mean number of books people read. (_,_)
Heights for teenage boys and girls were calculated. The mean height for the sample of 47 boys was 185 cm and the variance was 58. For the sample of 66 girls, the mean was 174 cm and the variance was 69. There is no reason to assume the variances would be equal. Estimate how much taller teenage boys are using a 87% confidence level. Express this in the (point estimate) ± (margin of error) format. Round answers to 2 decimal places. H
What is the multiplier for an interval that estimates the proportion with a. 88% confidence? b. 98% confidence?
Exam 2 Math 200 Fall 2019-03 7. A random sample of 31 people in a nursing home had a mean systolic blood pressure of 153 mmHg and standard deviation of 35 mmHg. Find the 90% confidence interval for the mean blood pressure of people in the nursing home. Interpret the result. Name:
You must estimate the mean. 60, 59.3, 49.7, 23.9, 44, 39.4, 85.2, 46 mean = 50.9375Find the 98% confidence interval. Enter your answer as an open interval (i.e. parentheses) accurate to two decimal places.
Heights for teenage boys and girls were calculated. The mean height for the sample of 50 boys was 167 cm and the variance was 57. For the sample of 56 girls, the mean was 153 cm and the variance was 67. There is no reason to assume the variances would be equal. Estimate how much taller teenage boys are using a 99% confidence level. Express this in the (point estimate) ± (margin of error) format. Round answers to 2 decimal places. H
Use the Student's t distribution to find tc for a 0.95 confidence level when the sample is 3. (Round your answer to three decimal places.) USE SALT

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