You may need to use the appropriate appendix table or technology to answer this question.A group conducted a survey of 13,000 brides and grooms married in the United States and found that the average cost of a wedding is $28,858. Assume that the cost of a wedding is normally distributed with a mean of $28,858 and a standard deviation of $5,400.(a) What is the probability that a wedding costs less than $18,000? (Round your answer to four decimal places.)x(b) What is the probability that a wedding costs between $18,000 and $31,000? (Round your answer to four decimal places.)(c) What is the minimum cost (in dollars) for a wedding to be included among the most expensive 5% of weddings? (Round your answer to the nearest dollar.)$X

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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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Suppose that the monthly charges for cell phone plans in the United States are normally distributed with a mean of $93 and a standard deviation of $19. What is the probability that any one cell phone user has a monthly plan that exceeds $76? Round your answer to at least three decimal places.
The household income in a particular town can be represented by a normal distribution with a mean of £50,000, and a standard deviation of £10,000. i. What is the probability that a particular household has an income level of more than £55,000? ii. What is the probability that a particular household has an income that is less than £35,000?
According to the U.S. Census Bureau, the mean household income in the United States in 2000 was $57,045 and the median household income was $42,148.The variability of household income is quite large with an overall standard deviation of approximately $25000. Suppose a random sample of 225 households was selected. What is the probability that the sample mean would be above $60,245?
The annual income for a sample of 450 part-time students is normally distributed with a mean income of $31,000 and a standard deviation of $3,000. What is the probability their annual income is more than $35,000?
The annual per capita consumption of ice cream (in pounds) in the United States can be approximated by a normal distribution with mean of 20.7 Ibs and a standard deviation of 4.2 Ibs. Find the probability that the population consumes at most 10 lbs yearly? Answer in a complete sentence in context.
You may need to use the appropriate appendix table or technology to answer this question. The weight of football players is normally distributed with a mean of 220 pounds and a standard deviation of 20 pounds. What is the probability of a player weighing less than 255 pounds
The annual income for a sample of 450 part-time students is normally distributed with a mean income of $31,000 and a standard deviation of $3,000. What is the probability their annual income is $22,000-$28,000?
The cost of textbooks is normally distributed with a mean of $222. You do not know the population standard deviation, but you know the sample standard deviation is $46.What is the probability that from a sample of 15 textbooks, their average cost will be less than $230? (Report answer accurate to three decimal places.)
You may need to use the appropriate appendix table or technology to answer this question. A group conducted a survey of 13,000 brides and grooms married in the United States and found that the average cost of a wedding is $24,858. Assume that the cost of a wedding is normally distributed with a mean of $24,858 and a standard deviation of $5,600. (a) What is the probability that a wedding costs less than $19,000? (Round your answer to four decimal places.) (b) What is the probability that a wedding costs between $19,000 and $31,000? (Round your answer to four decimal places.) (c) What is the minimum cost (in dollars) for a wedding to be included among the most expensive 5% of weddings? (Round your answer to the nearest dollar.)
The cost of textbooks is normally distributed with a mean of $202. You do not know the population standard deviation, but you know the sample standard deviation to be $49.What is the probability that from a sample of 10 textbooks, their average cost will be less than $210? (Report answer accurate to three decimal places.)
Costs for standard veterinary services at a local animal hospital follow a Normal distribution with a mean of $88 and a standard deviation of $24. What is the probability that one bill for veterinary services costs between $42 and $133?

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