The graph illustrates a normal distribution for the prices paid for a particular model of HD television. Themean price paid is $1400 and the standard deviation is $140. Round answers to 4 decimal places, usetechnology.980 1120 1260 1400 1540 1680 1820Distribution of PricesWhat is the probability that a buyer paid between $1120 and $1400?What is the probability that a buyer paid between $980 and $1400?What is the probability that a buyer paid less than $1120?What is the probability that a buyer paid between $1260 and $1400?What is the probability that a buyer paid less than $980?What is the probability that a buyer paid between $1260 and $1540?

Given that: Population mean, μ=1400 Population standard deviation, σ=140

Answered: The graph illustrates a normal…

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 people pay for electric service varies quite a bit, but the mean monthly fee is $168 and the standard deviation is $34. The distribution is not Normal. Many people pay about $90 in rural areas of the country and about $150 in urban areas of the country, but some pay much more. A sample survey is designed to ask a simple random sample of 1,200 people how much they pay for electric services. Let X be the mean amount paid. Part A: What are the mean and standard deviation of the sample distribution of x? Show your work and justify your reasoning. Part B: What is the shape of the sampling distribution of X? Justify your answer. Part C: What is the probability that the average electric service paid by the sample of electric service customers will exceed $170? Show your work.
The annual per capita consumption of ice cream (in pounds) in the United States can be approximated by the normal distribution, as shown in the figure to right. the (a) What is the largest annual per capita consumption of ice cream that can be in the bottom 9% of consumptions? (b) Between what two values does the middle 80% of the consumptions lie? UN H=19.8 4.3 8 20 32 Consumption (in lbs)
Using the image answer the following. Find the probability that a randomly selected household in North America uses between 69 and 161 gallons of water per day. Show work
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One graph in the figure represents a normal distribution with mean u= 15 and standard deviation o = 2. The other graph represents a normal distribution with mean u=11 and standard deviation o = 2. Determine which graph is which and explain how you know. A B 11 15 ... Choose the correct answer below. O A. Graph A has a mean of u = 15 and graph B has a mean of u = 11 because a larger mean shifts the graph to the right. O B. Graph A has a mean of u = 11 and graph B has a mean of u= 15 because a larger mean shifts the graph to the left. O C. Graph A has a mean of u = 11 and graph B has a mean of u = 15 because a larger mean shifts the graph to the right. O D. Graph A has a mean of u = 15 and graph B has a mean of u = 11 because a larger mean shifts the graph to the left.
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Not everyone pays the same price for the same model of a car. The figure illustrates a normal distribution for the prices paid for a particular model of a new car. The mean is $ 18 comma 000$18,000 and the standard deviation is $ 2000 Use the 68 - 95-99.7 68-95-99.7 Rule to find the percentage of buyers who paid more than $ 20 comma 000$20,000.
The distribution of the number of hours that a random sample of people spend doing chores per week is shown in the pie chart. Use 32 as the midpoint for "30+ hours." Make a frequency distribution for the data. Then use the table to estimate the sample mean and the sample standard deviation of the data set. W Click the icon to view the pie chart. ..... 5-9 12 10-14 23 15-19 16 20-24 18 25-29 12 30+ 4 Find an approximation for the sample mean. x= 16.6 (Type an integer or decimal rounded to the nearest tenth as needed.) Find an approximation for the sample standard deviation. s= (Type an integer or decimal rounded to the nearest tenth as needed.)
What percentage of buyers paid between $14,500 and $16,000?
(See photo) The data set on the left represents the annual rate of return (in percent) of eight randomly sampled bond mutual funds, and the data set on the right represents the annual rate of return (in percent) of eight randomly sampled stock mutual funds. What proportion of the observations is within one standard deviation of the mean for each data set?
The graph illustrates the distribution of test scores taken by College Algebra students. The maximum possible score on the test was 140, while the mean score was 80 and the standard deviation was 13. + + + 41 54 67 80 93 106 119 Distribution of Test Scores What is the approximate percentage of students who scored between 54 and 106 on the test? What is the approximate percentage students who scored between 67 and 93 on the test? % What is the approximate percentage of students who scored between 80 and 93 on the test? %
Your Turn: Standardized Scores Scores on the final exam in Ms. Meyer's statistics class follow a normal distribution, with a mean of 82 and a standard deviation of 5. 1. Ron, who took Ms Meyer's class, scored 88 on the final. Ron's z-score is Click to view hint 2. This means that Ron's final score is Click to view hint 3. Dan also took Ms. Meyer's class, and the z-score of his final is -2.4. This means that Dan's score is: Click to view hint 4. Dan's actual score on the final is Click to view hint 5. Julie was assigned to take her statistics class with Mr. Fisher, whose final scores followed normal distribution with mean 75 and standard deviation of 6. Her score on the final was 84. Which of the two scores, Ron's or Julie's, is more impressive? Click to view hìnt Check

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