Some street foods are tested with the presenceof disease causing bacteria or harmful chemicalsa random sample of 200 street foods accordingto how they are prepared. See the table below.TOTALFOODWITHBACTERIAWITH HARMFULCHEMICALS ONLYWITH BOTHBACTERIA ANDONLYCHEMICLALSFried35151868Boiled46143292Grilled248840TOTAL105375820011. What is the probability that a street foodselected at random is fried?68355068A.B.C.D.200105142142112. What is the probability that a food selectedat random is both grilled and contained harmfulchemicals?405816A.B..C. 14216D.20010520013. What is the probability that a randomlyselected food has both bacteria and harmfulchemicals?405816A.-200B.8C..D..10514258ly

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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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In a certain state, about 70% of drivers who are arrested for driving while intoxicated (DWI) are convicted. Complete parts a through c below. Question content area bottom Part 1 a. If 12 independently selected drivers were arrested for DWI, how many of them would you expect to be convicted? Choose the correct answer below. A.77 B.99 C.66 D.88 Part 2 b. What is the probability that exactly 8 out of 12 independently selected drivers are convicted? The probability that exactly 8 out of 12 drivers are convicted is enter your response here. (Type an integer or decimal rounded to three decimal places as needed.) Part 3 c. What is the probability that 8 or fewer are convicted? The probability that 8 or fewer drivers are convicted is enter your response here. (Type an integer or decimal rounded to three decimal places as needed.)
9. To investigate how often families eat at home, a researcher surveyed 100 adults living with children under the age of 18 years. The survey results are shown below. What is the probability that a randomly selected family eats at least two meals at home per week? Number of Meals eaten at home per week 0 1 2 3 or more Number of Survey Responses 25 30 25 20
Giving a test to a group of students, the grades and genders are summarized below A B Total Male 10 7 8 25 Female 12 3 17 32 Total 22 10 25 57 If one student was chosen at random, 1. Find the probability that the student got a B. Answer: 0.1754 2. If the chosen student was male, find the probability that this student got a grade C or B. Answer:
1. The ages of all males from the freshmen students in the University of Santo Tomas is a/an ___________. a. frequency b. sample c. statistic d. population 2. If the probability of a defective bolt is 0.1, determine the mean for the number of defective bolts in a total of 400 bolts. Is the answer 40?
Organ Donors USA Today provided information about a survey of 5100 adult Internet users. Of the respondents, 2346 said they are willing to donate organs after death. In this survey conducted for Donate Life America, 100 adults were surveyed in each state and the District of Columbia, and results were weighted to account for the different state population sizes. a. What percentage of respondents said that they are willing to donate organs after death? b. Based on the poll results, what is the probability of randomly selecting an adult who is willing to donate organs after death? c. What term is used to describe the sampling method of randomly selecting 100 adults from each state and the District of Columbia?
Three unbiased coins are tossed. What is the probability of getting at most two heads? A.34B.14C.38D.78
Find the probability of student being both female and good?
The table below shows the results of a survey that asked the involvement of a person in a charity work. The person’s gender and response were recorded. Find the probability of selecting a female who never volunteers a.0.29 b.0.57 c.0.51 d.0,49
Refer to the sample data for pre-employment drug screening shown below. If one of the subjects is randomly selected, what is the probability that the test result is a false positive? Who would suffer from a false positive result? Why? Pre-Employment Drug Screening Results Positive test result Negative test result Drug Use Is Indicated Drug Use Is Not Indicated Subject Uses Drugs 42 11 Subject Is Not a Drug User 17 34
Four coins are tossed, and the number of heads is recorded. Shade the region on the histogram that gives the indicated probability. P(x > 2) Which of the following shaded regions gives the indicated probability? (Type A, B, C, or D.) A) 0.5- 0.38- 0.25- 0.13- 0- 0.5- 0.38 0.25- 0.13- लट 0 1 2 3 4 01 2 3 4 B) D) 0.5- 0.38- 0.25- 0.13- 0- 0.5- 0.38 0.25 0.13- 0- 0 1 2 3 4 0 1 2 3 4
Suppose you toss a coin 125 times and get 30 heads and 95 tails. Based on these results, what is the estimated probability of obtaining a tail on this coin? Use the empirical method. Group of answer choices 76% 24% 95% 30%
An elected official surveyed residents of a town to assess their satisfaction with city services. The survey includes both those who own and those who rent their homes. Level of Satisfaction High Medium Low Total Owners 26 34 18 78 Renters 15 12 5 32 Total 41 46 23 110 What is the probability that a resident reports high satisfaction, given that the resident is a renter? 13.7% 20.0%0 36.6% 46.9%

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