The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, onaverage, the reduction in systolic blood pressure is 72.1 for a sample of size 517 and standarddeviation 11.1.Estimate how much the drug will lower a typical patient's systolic blood pressure (using a 99%confidence level).Enter your answer as a tri-linear inequality accurate to one decimal place (because the samplestatistics are reported accurate to one decimal place).Answer should be obtained without any preliminary rounding. A shareholders' group is lodging a protest against your company. The shareholders group claimedthat the mean tenure for a chief exective office (CEO) was at least 8 years. A survey of 113companies reported in The Wall Street Journal found a sample mean tenure of 6.3 years for CEOSwith a standard deviation ofs =5.1 years (The Wall Street Journal, January 2, 2007). You don'tknow the population standard deviation but can assume it is normally distributed.You want to formulate and test a hypothesis that can be used to challenge the validity of the claimmade by the group, at a significance level of = 0.001. Your hypotheses are:Н.: д > 8Ha:µ < 8What is the test statistic for this sample?test statistic(Report answer accurate to 3 decimal places.)What is the p-value for this sample?p-value =(Report answer accurate to 4 decimal places.)The p-value is...less than (or equal to) agreater than aThis test statistic leads to a decision to...reject the nullaccept the nullO fail to reject the nullAs such, the final conclusion is that...

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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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The result of an English test was collected, and the grades and gender are summarized below A B C Total Male 5 17 8 30 Female 16 14 2 32 Total 21 31 10 62 Let pp represent the proportion of all female students who would receive a grade of B on this test. Use a 98% confidence interval to estimate pp to three decimal places.Enter your answer as a tri-linear inequality using decimals (not percents). < pp <
The result of an accounting test was collected, and the grades and gender are summarized below A B C Total Male 9 15 17 41 Female 7 6 16 29 Total 16 21 33 70 Let p represent the proportion of all female students who would receive a grade of B on this test. Use a 85% confidence interval to estimate p to three decimal places.Enter your answer as a tri-linear inequality using decimals (not percents).< p <
The result of an anthropology test was collected, and the grades and gender are summarized below ABCTotalMale183223Female1719844Total35221067 Let p represent the proportion of all male students who would receive a grade of A on this test. Use a 90% confidence interval to estimate p to three decimal places. Enter your answer as a tri-linear inequality using decimals (not percents). < p<
What is the confidence interval 41.4%±3.8%41.4%±3.8% in the form of a trilinear inequality?
In our Condor Cafe, the Oxnard College Culinary Program offers the most delicious and affortable breakfast and lunch choices among the 152 Community Colleges in California. This week, a random sample of 359 orders were recorded, and 178 orders were for the $5-meals. Find the 80% confidence interval for the true proportion of the orders for the $5-meals. a. Enter answer as an open-interval. (i.e., parentheses) b. Express the same answer as a tri-linear inequality using decimals accurate to 3 decimal points c. Express the same answer using the point estimate and margin of error. Answer as decimals, to 3 places
140 students at a college were asked whether they had completed their required English 101 course, and 73 students said "yes". Construct the 80% confidence interval for the proportion of students at the college who have completed their required English 101 course. Enter your answer as a tri-linear inequality using decimals (not percents) accurate to three decimal places. < p <
If we want both intervals to hold at the 90% level of confidence, then the individual intervals must hold at a higher level of confidence. Write a brief but detailed explanation of how this could be of importance in a large, complex engineering design such as a rocket booster or a spacecraft.
Assume that a sample is used to estimate a population proportion p . Find the 98% confidence interval for a sample of size 167 with 133 successes ______less than p less than ________ Enter your answer as a tri linear inequality using decimals ( not percents)
Express the confidence interval 210.5±104.1 in the form of a trilinear inequality.<μ<
105 students at a college were asked whether they had completed their required English 101 course, and 62 students said "yes". Construct the 90% confidence interval for the proportion of students at the college who have completed their required English 101 course. Enter your answer as a tri-linear inequality using decimals (not percents) accurate to three decimal places.
87 students at a college were asked whether they had completed their required English 101 course, and 64 students said "yes". Construct the 85% confidence interval for the proportion of students at the college who have completed their required English 101 course. Enter your answer as a tri-linear inequality using decimals (not percents) accurate time three decimal places.
The values in the middle of a confidence interval are more likely to be the true value for the parameter than the values near the edges of the interval. True or False

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<µ< nswer should be obtained without any preliminary rounding.