Does a new diet plan help people lose weight? Twenty people were weighed before starting a 3-month diet program and again after theycompleted the program. The change in weight was found by taking, before weight minus after weight. If the test statistic was 3.45, whatis the correct conclusion?O The average weight loss for all people on this plan is 3.45 pounds.We do not have statistically significant evidence that the population mean weight loss was less than zero.O We have strong statistically significant evidence to show the population mean weight loss was greater than zero. Do people drive faster if they listen to loud music? Three people drove to work one day with no music and another day with loud music.Their speed was recorded on an open space of road and the data is listed below. Find the value for the multiplier that would be used ina 95% confidence interval.Loud Music No MusicDriver 13530Driver 2 3230Driver 3 2530O 4.3033,182O 1.960O 2.576

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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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I had just submitted a problem like this an it was incorrect. Can you help again? Thx n a recent year, the Better Business Bureau settled 75% of complaints they received. (Source: USA Today, March 2, 2009) You have been hired by the Bureau to investigate complaints this year involving computer stores. You plan to select a random sample of complaints to estimate the proportion of complaints the Bureau is able to settle. Assume the population proportion of complaints settled for the computer stores is the 0.75, as mentioned above. Suppose your sample size is 76. What is the probability that the sample proportion will be 4 or more percent below the population proportion?Note: You should carefully round any z-values you calculate to 4 decimal places to match wamap's approach and calculations.Answer = (Enter your answer as a number accurate to 4 decimal places.)
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An ecology class used binoculars to watch 23 turtles at Walden Pond. It was found that 18 were box turtles and 5 were snapping turtles. What kind of study is this? -observational -census -simulation -experimental
A violin student records the number of hours they spend practicing during each of ten consecutive weeks. 5.4 4.4 What is the first quartile for this data? 4.4 4.9 2.7 4.5 5.9 2.1 3.9 3.4
You want to obtain a sample to estimate the proportion of a population that possess a particular genetic marker. Based on previous evidence, you believe approximately of the population have the genetic marker. You would like to be 98% confident that your estimate is within 5% of the true population proportion. How large of a sample size is required?
To collect data about the amount of time students spend studying for exams, which of the following methods should a teacher use to lead to a sample that is the most representative of the students in the school? Survey all the students who are in their final year of high school. Survey all students who achieved over 85% on their report card last semester. Survey all the students who play football. Survey all the students in the classes that he or she teaches. Survey 20 randomly selected students from each grade.
When comparing two independent population means, if n1 = 13 and n2 = 10, degrees of freedom for the t statistic is 22. %3D True or False True False
Consider the following passage: I ran a regression, with many variables to predict the result of another variable which was the murder rate. One can see that lots of things, can cause the murder rate to increase or decrease. I tried to account for all the important factors, and those factors are the SAT scores, unemployment rate, and international migration per 1,000. The SAT score is, average combined total score participants did on the SAT exam. The unemployment rate is, "a measure of the prevalence of unemployment and it is calculated as a percentage by dividing the number of unemployed individuals by all individuals currently in the labor force." (Wikipedia) International migration per 1,000 is, the number of people who come into a state from other countries per 1,000 people who live in the state. After I run the regression I will look at the t scores and p values and I should hopefully conclude that international migration does not cause crime. Which writing mistakes, if any, did…
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately 23%. You would like to be 98% confident that your estimate is within 1% of the true population proportion. How large of a sample size is required?
4
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sed on data from WHO, a representative sample of 11-year-old males could consist of the following 15 values. 15.7, 16.0, 13.9, 15.3, 18.6, 14.8, 17.7, 16.6, 18.1, 19.2, 16.3, 17.3, 16.9, 25.6, 20.4 using the data calculate the 85th per

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