Severalyears ago, 44% of parents who had children in grades K-12 were satisfied with the quality of education the students receive. A recent poll asked 1,075 parentswho have children in grades K-12 if they were satisfied with the quality of education the students receive. Of the 1,075 surveyed, 479 indicated that they were satisfied.Construct a 95% confidence interval to assess whether this represents evidence that parents' attitudes toward the quality of education have changed.What are the null and alternative hypotheses?Ho: p = 0.44 versus H,: p0.44(Round to two decimal places as needed.)Use technology to find the 95% confidence interval.The lowerisThe upper bound is(Round to two decimal places as needed.)

Given- Hypothesized Population proportion (p0) = 44% = 0.44…

Answered: Several years ago, 44% of parents who…

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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Several years ago, 43% of parents who had children in grades K-12 were satisfied with the quality of education the students receive. A recent poll asked 1,125 parents who have children in grades K-12 if they were satisfied with the quality of education the students receive. Of the 1,125 surveyed, 482 indicated that they were satisfied. Construct a 95% confidence interval to assess whether this represents evidence that parents' attitudes toward the quality of education have changed. What are the null and alternative hypotheses? Ho: p versus H1: p (Rour cimal places as needed.) > A
An issue of Time Style and Design reported on a poll conducted by Schulman Ronca & Bucuvalas Public Affairs about the shopping habits of wealthy Americans. A total of 603 interviews were conducted among a national sample of adults with household incomes of at least $150,000. Of the adults interviewed, 410 said they had purchased clothing, accessories, or books online in the past year. Find a 95% confidence interval for the proportion of all U.S. adults with household incomes of at least $150,000 who purchased clothing, accessories, or books online in the past year. Interpret the confidence interval. Complete with graph and syntax Excel.
Suppose you ran the following regression and found this statistically significant result: AGE = 120 + -4*HEALTH where AGE is how old someone is and HEALTH is a rating on how healthy they are, from 1 (very unhealthy) to 20 (very healthy). You realize you have it backwards: age causes health, not health causes age. What should the new equation be? 1 HEALTH = -30 + -0.25*AGE 2 It is impossible to tell without re-running the regression. 3 HEALTH = 120 + -4*AGE 4 HEALTH = -30 + 0.25*AGE 5 HEALTH = 30 + -0.25*AGE
The tobacco industry closely monitors all surveys that involve smoking. One survey showed that among 785 randomly selected subjects who completed four years of college, 18.3% smoke (based on data from the American Medical Association). Construct the 98% confidence interval for the true percentage of smokers among all people who completed four years of college.
Several years ago, 44% of parents who had children in grades K-12 were satisfied with the quality of education the students receive. A recent poll asked 1,075 parents who have children in grades K-12 if they were satisfied with the quality of education the students receive. Of the 1,075 surveyed, 479 indicated that they were satisfied. Construct a 95% confidence interval to assess whether this represents evidence that parents' attitudes toward the quality of education have changed. What are the null and alternative hypotheses? Ho: P versus H1: p (Round to two decimal places as needed.)
Ten students on a low-fat diet designed to lower their cholesterol and recorded their before and after diet data in the following table: Before diet cholesterol level: After diet cholesterol level: 140 140 220 230 110 120 240 220 200 190 180 150 190 200 360 300 280 300 260 240 Based on a 95% confidence level, after hypothesis testing, what would you tell the students about the diet? 2. Which test will you use to test for this statistical analysis?
A new survey found that out of a random sample of 300 high school students throughout the country who had previously signed up to take the AP Statistics exam, 83% of them still planned on taking the adjusted version. Construct and interpret a 95% confidence interval for the true proportion of all students who still plan on taking their AP Stats exam. Explain what 95% confidence means in the context of this question. The AP exam believes that more than 86% of students will still be taking the exam. What can you say about their claim based on your interval in part (a)?
Several years ago, 46% of parents who had children in grades K-12 were satisfied with the quality of education the students receive. A recent poll asked 1,045 parents who have children in grades K-12 if they were satisfied with the quality of education the students receive. Of the 1,045 surveyed, 496 indicated that they were satisfied. Construct a 95% confidence interval to assess whether this represents evidence that parents' attitudes toward the guality of education have changed.
The Nellie Mae organization conducts an extensive annual study of credit card usage by college students. For their 2004 study, they analyzed credit bureau data for a random sample of 1413 undergraduate students between the ages of 18 and 24. They found that 76 % of the students sampled held a credit card. Determine a 95% confidence interval for the proportion of all undergraduate college students in the United States who held a credit card in 2004.(4 decimals)
Several years ago, 44% of parents who had children in grades K-12 were satisfied with the quality of education the students receive. A recent poll asked 1,095 parents who have children in grades K-12 if they were satisfied with the quality of education the students receive. Of the 1,095 surveyed, 471 indicated that they were satisfied. Construct a 99% confidence interval to assess whether this represents evidence that parents' attitudes toward the quality of education have changed. (... The lower bound is 4 The upper bound is (Round to two decimal places as needed.) Help me solve this Get more help. Check answer #H Type here to search A $ 1:09 PM 6/18/2022 * S E $ R F View an example 5 T G B O#O U J 8 M 1 hp K $ a 9 O P → E Clear all prt se 1 94°F Mostly sunny num 7
If 64% of a sample of 550 people leaving a shopping mall claims to have spent over $25 create and interpret a 95% confidence interval estimate for the proportion of shopping mall customers who spend over $25
Students who participated in a UCLA Labor Summer Research Program in 2017 surveyed 260 drivers for organizations like Lyft and Uber and asked them several questions about their experience as drivers. One of the questions was whether they would would like employee-type benefits, such as paid time off, workers’ compensation, and health and unemployment insurance. Based on the responses, a 95% confidence interval for the proportion of drivers who would would like employee type benefits is 91% to 97%. A summary at the beginning of the report states "All drivers want some kind of workplace benefit." Is the statement in the summary supported by the confidence interval? Be sure to state why for full credit.

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