Answered: If the margin of error in an interval…

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 amount of time (in minutes) that a sample of students spends watching television per day is givenbelow:56, 31, 64, 49, 53, 62, 51, 54 a. determine the range b. compute the interquartile range c. Which measure (range or interquartile range) is more likely to be influenced by extremevalues in the data set?
Please help me answering these questions.
Which of the following statements is not true? There is only one median for each variable. One definition of the median states that, for an odd number of observations, the median is the middle score when scores are placed in order of magnitude. Another term for the median is 50th percentile. The median is generally more sensitive to (i.e., affected by) the presence of a few extreme observations than is the mean.
The IQR (interquartile range) is the difference between Q3 and Q1. For the data below (same data as in previous questioni find the IQR: IQR- A value is considered unusually small if it is 1.5 IQR smaller then the median and is considered unusually large if it is 15 1QR larger then the median. Based on this, what is the smallest usual value for the data set? (do not round, type as a decimal What is the largest usual value for the data set? (do not round, type as a decimal) An outlier would be a data value which is smaller then the smallest unual data value or larger then the largest data value. If there is an outier, type the value of the authier below. Otherwise type N. Data set:
In testing a certain kind of truck tire over rugged terrain, it is found that 39% of the trucks fail to complete the test run without a blowout. Of the next 15 trucks tested, find the probability that at least 3 trucks have blowouts.
USA Today reported that about 20% of all people In the United States are Illiterate. Suppose you take eleven people at random off a city street. P USE SALT (a) Make a histogram showing the probability distribution of the number of illiterate people out of the eleven people in the sample. 0.30 0.30 0.25 0.25 0.20 0.20 0.15 0.15 0.10 0.10 0.05 0.05 2 3 4 5 7. 8 9 10 11 0 1 2 3 4 5 6 78 9 10 11 0.30 0.30 0.25 0.25 0.20 0.20 0.15 0.15 0.10 0.10 0.05 0.05 0. 0 1 2 3 4 5 6 7 8 9 10 11 0 1 2 3 45 6 7 8 9 10 11 (b) Find the mean and standard deviation of this probability distribution. (Round your standard deviation to two decimal places.) people people Find the expected number of people in this sample who are illiterate. people
Solve for SSA, Degree of freedom of error, computed f-value, and conclusion.
For questions 1 and 2, sketch an appropriate graph as part of your solution. A college entrance exam has a mean score of 150 with a standard deviation of 23. If the shape of the distribution of these exam scores is skewed to the right, what can be said about the proportion of students taking this exam obtain a score between 104 and 196? 1. A college entrance exam has a mean score of 150 with a standard deviation of 23. If the shape of the distribution of these exam scores is mound shaped and symmetrical, approximately what proportion of students taking this exam obtain a score: a) below 81? b) between 104 and 150? c) above 173? 2.
a. Please answer this also on MINITAB. In 4 decimal places. Do not return my question. Let someone help me.
For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding.In a marketing survey, a random sample of 982 supermarket shoppers revealed that 262 always stock up on an item when they find that item at a real bargain price. (a) Let p represent the proportion of all supermarket shoppers who always stock up on an item when they find a real bargain. Find a point estimate for p. (Round your answer to four decimal places.)(b) Find a 95% confidence interval for p. (Round your answers to three decimal places.) lower limit upper limit
For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding.In a marketing survey, a random sample of 986 supermarket shoppers revealed that 268 always stock up on an item when they find that item at a real bargain price. (a) Let p represent the proportion of all supermarket shoppers who always stock up on an item when they find a real bargain. Find a point estimate for p. (Round your answer to four decimal places.)(b) Find a 95% confidence interval for p. (Round your answers to three decimal places.) lower limit upper limit What is the margin of error based on a 95% confidence interval? (Round your answer to three decimal places.)
A critical communications relay has a constant failure rate of 0.1 per day. Once it has failed, the mean time to repair is 2.5 days (the repair rate is constant). Calculate the interval availability over a 2-day mission (starting at time zero) and the point availability at the end of the 2 days.

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If the margin of error in an interval estimate of μ is 8.2, the interval estimate equals