31. A survey on eating habits conducted at the local mall produced the following information:Fast Food FavoriteBurgersТаcosPizzaTotalUnder 201631237020-4021441580Over 4043151270Total809050220What is the probability that a person selected at random from this group:a) prefers burgers?b) is over 40?c) prefers burgers and is over 40?d) prefers burgers given they are over 40?e) is over 40 given they prefer burgers?f) prefers pizza and is 20-40?g) is under 20 and prefers tacos?h) prefers tacos given they are under 20?i) prefers burgers or is under 20?j) does not prefer tacos?

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Answered: 31. A survey on eating habits conducted…

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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According to flight stats.con American Airline flights from Dallas to Chicago are delayed 20% of the time. Supposed 15 flights are randomly selected find the probability that one is delayed. a.) .0001 b.) .1319 c.) .2 d.) .0667
5. Approximately 10% of American high school students drop out of school before graduation. Choose 20 students entering high school at random. Find the probability that a) No more than 10 drop out. b) All stay in school and graduate c) At least 18 graduate. Find the mean and variance of the number of students finished high school and graduated.
2. A lot of 200 construction materials is known to contain 20 defective materials. Twenty construction materials are selected at random and each material is replaced before the next is selected. a. Give the following information: a.1 n a.2 p a.3 q b. What is the probability of getting at most two defective construction materials?
The following table lists the number of unicyclists in Corvallis, OR. by age group. Age Group Frequency ≤19 64 20-29 52 30-39 46 40-49 68 50-59 94 60-69 68 ≥70 77 What is the probability that a randomly selected unicyclist from Corvallis, OR. is not between 30 and 39?
Check my work and help with section d, please.
The following table lists the number of unicyclists in Corvallis, OR. by age group. Age Group Frequency ≤19 31 20-29 96 30-39 98 40-49 43 50-59 19 60-69 83 ≥70 92 What is the probability that a randomly selected unicyclist from Corvallis, OR. is not between 40 and 49?
8) Given the following table with eye color and hair color for a sample of 592 people... Black hair Brown hair Blond hair 16 10 Red hair Total Green eyes Hazel eyes Blue eyes Brown eyes Total 29 14 14 15 54 84 119 20 17 26 94 68 a) What percent of people with brown hair have blue eyes? b) What is the probability someone with green or hazel eyes has red hair? 102 F Par 99+
What requirement must be met to be a true random sample? A.The probability of selecting one individual is independent of selecting another individual. B. The probability of being selected stays constant from one selection to another. C. Each individual has an equal chance of being selected for the sample. D. All of the answers are correct. E. Sampling is done with replacement.
3. The latest data from the CDC indicates that 14% of Americans are smokers. A researcher wants to identify smokers for a survey. He randomly selects people entering a grocery store to ask if they are a smoker. a) What is the probability that he identifies the first smoker on his 5th try? b) What is the probability that he has to approach more than 8 people before finding the first smoker? c) How many people does he expect to approach before finding the first smoker?
16. Ten percent of the students at a certain college are non-resident. A reporter for the student paper would like to interview at least 5 non-residents. If the reporter randomly selects 100 names from the student directory and begins contacting them, what is the probability that she will contact at least 5 non-resident students?
4. Final: In a monthly report, the local animal shelter states that it curently has 21 dogs and 27 cats. Fourteen of the dogs and 18 of the cats are female. If an animal is selected at random, find the probability that the pet is a male dog. O a. 4283 O b.1458 O c.5194 O d. .2319 Previous page Jump to. 近

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