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30% of flowers of a certain species bloom early (before May 1st). You work for an arboretum and have a display of these flowers.In a row of flowers, what is the probability that you will observe more than 4 flowers before you see the first one that blooms early? Round your answer to four decimal place

30% of flowers of a certain species bloom early (before May 1st). You work for an arboretum and have a display of these flowers.In a row of flowers, what is the probability that you will observe more than 4 flowers before you see the first one that blooms early? Round your answer to four decimal place

A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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1)30% of flowers of a certain species bloom early (before May 1st). You work for an arboretum and have a display of these flowers.In a row of flowers, what is the probability that you will observe more than 4 flowers before you see the first one that blooms early? Round your answer to four decimal place
thanks for your help IThe average amount of money spent for lunch per person n the college cafeteria is $6.2 and the standard deviation is $2.9. Suppose that 18 randomly selected lunch patrons are sbserved, Assume the distribution of money spent is normal, nd round all answers to 4 decimal places where possible. a. For a single randomly selected lunch patron, find the probability that this patron's lunch cost is between $5.8 and $6.46. b. For the group of 18 patrons, find the probability that the average lunch cost is between $5.88 and S6.. c. For part b, ts the assumption that the distribution is normal necessary? Yesio 2yThe average number of miles (in thousands) that a car's tire will function before needing replacement is 59 and the standard deviation is 12. Suppose that 15 randomly selected tires are tested. Round all answers to 4 decimal places where possible and assume a normal distribution. a. If a randomly selected individual tire is tested, find the probability that the number of miles (in thousands) before it will need replacement is between 65.7 and 67,4. far b. For the 15 tires tested, find the probability that the average miles (in thousands) before need of replacement is between 65.7 and 674. c. For part b, is the assumption that the distribution is normal necessary Noves 3YThe amount of syrup that people put on their pancakes is normally distributed with mean 60 ml and standard deviation 12 ml. Suppose that 49 randomly selected people are observed pouring syrup on their pancakes. Round all answers to 4 decimal places where possible. a. If a single randomly selected individual is observed find the probability that this person consumes is between 58.7 ml and 61 ml b. For the group of 49 pancake eaters, find the probability that the average amount of syrup is between 58.7 ml and 61 mL. c. For part b, is the assumption that the distribution is normal necessary YesNo The average price of a college math textbook is $177 and the standard deviation is $20. Suppose that 44 textbooks are randomly chosen. Round all answers to 4 decimal places where possible. a. For the group of 44, find the probability that the average price is between $172 and $176. b. Find the third quartile for the average textbook price for this sample stize. S (round to the nearest cent) c. For part a, is the assumption that the distribution is normal necessary Yesto 5yThe lengths of adult males' hands are normally istributed with mean 195 mm and standard deviation is 7.2 mm. Suppose that 43 individuals are randomly chosen. a. For the group of 43, find the probability that the average hand length is more than 196. Round your answer to 4 decimal places. b. Find the third quartile for the average adult male hand length for this sample size. Round your answer to 3 decimal places e. For part a, is the assumption that the distribution is normal necessary? Noves biSuppose the age that children learn to walk is hormally distributed with mean 12 months and standard deviation 2.2 month. 34 randomly selected people were asked what age they learned to walk. Round all answers to 4 decimal places where possible. a. What is the probability that one randomly selected person learned to walk when the person was between 11.7 and 12.5 months old? b. For the 34 people, find the probability that the average age that they leaned to walk is between 11.7 and 12.5 months old. c. For part b, is the assumption that the distribution is normal necessary Yesho d. Find the QR for the average first time walking age for groups of 34 people. Round to two decimal places. QI- months Q3- months KOR: month 7IThe amount of coffee that people drink per day is normally distributed with a mean of standard deviation of 4 ounces. 9 randomly selected people are surveyed. Round all arswers to 4 decimal places where possible. f. 14 ounces and a a. What is the probability that one randomly selected person drinks between 12.5 and 14.5 ounces of coffee per day b. For the 9 people, find the probability that the average coffee consumption is between 12.5 and 14.5 ounces of coffee per day. c. For part b, is the assumption that the distribution is normal necessary? NoYes d. Find the IQR for the average of 9 coffee drinkers. Round to two decimal places. Q1- ounces Q3- ounces
Transcribed Image Text:thanks for your help IThe average amount of money spent for lunch per person n the college cafeteria is $6.2 and the standard deviation is $2.9. Suppose that 18 randomly selected lunch patrons are sbserved, Assume the distribution of money spent is normal, nd round all answers to 4 decimal places where possible. a. For a single randomly selected lunch patron, find the probability that this patron's lunch cost is between $5.8 and $6.46. b. For the group of 18 patrons, find the probability that the average lunch cost is between $5.88 and S6.. c. For part b, ts the assumption that the distribution is normal necessary? Yesio 2yThe average number of miles (in thousands) that a car's tire will function before needing replacement is 59 and the standard deviation is 12. Suppose that 15 randomly selected tires are tested. Round all answers to 4 decimal places where possible and assume a normal distribution. a. If a randomly selected individual tire is tested, find the probability that the number of miles (in thousands) before it will need replacement is between 65.7 and 67,4. far b. For the 15 tires tested, find the probability that the average miles (in thousands) before need of replacement is between 65.7 and 674. c. For part b, is the assumption that the distribution is normal necessary Noves 3YThe amount of syrup that people put on their pancakes is normally distributed with mean 60 ml and standard deviation 12 ml. Suppose that 49 randomly selected people are observed pouring syrup on their pancakes. Round all answers to 4 decimal places where possible. a. If a single randomly selected individual is observed find the probability that this person consumes is between 58.7 ml and 61 ml b. For the group of 49 pancake eaters, find the probability that the average amount of syrup is between 58.7 ml and 61 mL. c. For part b, is the assumption that the distribution is normal necessary YesNo The average price of a college math textbook is $177 and the standard deviation is $20. Suppose that 44 textbooks are randomly chosen. Round all answers to 4 decimal places where possible. a. For the group of 44, find the probability that the average price is between $172 and $176. b. Find the third quartile for the average textbook price for this sample stize. S (round to the nearest cent) c. For part a, is the assumption that the distribution is normal necessary Yesto 5yThe lengths of adult males' hands are normally istributed with mean 195 mm and standard deviation is 7.2 mm. Suppose that 43 individuals are randomly chosen. a. For the group of 43, find the probability that the average hand length is more than 196. Round your answer to 4 decimal places. b. Find the third quartile for the average adult male hand length for this sample size. Round your answer to 3 decimal places e. For part a, is the assumption that the distribution is normal necessary? Noves biSuppose the age that children learn to walk is hormally distributed with mean 12 months and standard deviation 2.2 month. 34 randomly selected people were asked what age they learned to walk. Round all answers to 4 decimal places where possible. a. What is the probability that one randomly selected person learned to walk when the person was between 11.7 and 12.5 months old? b. For the 34 people, find the probability that the average age that they leaned to walk is between 11.7 and 12.5 months old. c. For part b, is the assumption that the distribution is normal necessary Yesho d. Find the QR for the average first time walking age for groups of 34 people. Round to two decimal places. QI- months Q3- months KOR: month 7IThe amount of coffee that people drink per day is normally distributed with a mean of standard deviation of 4 ounces. 9 randomly selected people are surveyed. Round all arswers to 4 decimal places where possible. f. 14 ounces and a a. What is the probability that one randomly selected person drinks between 12.5 and 14.5 ounces of coffee per day b. For the 9 people, find the probability that the average coffee consumption is between 12.5 and 14.5 ounces of coffee per day. c. For part b, is the assumption that the distribution is normal necessary? NoYes d. Find the IQR for the average of 9 coffee drinkers. Round to two decimal places. Q1- ounces Q3- ounces
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