1. This table shows the number ofstudents from each grade level whoearned at least two A's during thefirst nine weeks grading period.Students with at least two A'sNumber ofStudentsGradeLevel101112324283261294One student will be randomlyselected from this group of studentsto win the grand prize in theacademic incentive program. Whichis closest to the probability that thestudent selected will be a freshmanor sophomore?A. 0.24B. 0.28C. 0.48D. 0.52

The probability of an event is calculated by the ratio of the number of cases favorable to that…

Answered: 1. This table shows the number of…

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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Part a through c please.
. Assume that 75 percent of the students at the university have taken 4 years of high school math. Of those with four years of high school math, 80 percent plan to major in science. Of those without 4 years, only 10 percent plan to major in science. You stop a student at random. If the student plans to major in science, what is the probability that this student had four years of high school math?
A survey conducted on students of XYZ University reported the number of male and female students and their majors. The data obtained are given in the following table. Science Politics Total Men 109 13 122 Women 10 23 33 Total 119 36 155 a. What is the probability that a student majors in Science?b. What is the probability that a student majoring in Science of or being a male?c. What is the probability that a student majoring in Sciences and is given that he is a man?
A researcher is selecting lab rats for her experiment. She assigns each rat a number and picks numbers out of a hat while blindfolded. The pool of rats from which she is drawing participants is composed of the following: 23 male albino rats 21 male spotted rats 35 female albino rats 11 female spotted rats If she reaches into the hat once, what is the probability of choosing a female rat or an albino rat? Give your answer as a decimal rounded to 4 decimal places.
Solve the following:
1. Use this table for the following questions: Female Male TotalShort Hair 20 40 60 Long Hair 30 10 40 Total 50 50 100 a. Complete a total probability table.b. Complete a row probability tablec. Complete a column probability table.d. The probability that a student does not have long hair. _________e. The probability that a student is male or has short hair. ________f. The probability that a student is a female and has long hair. _________g. The probability that a student is male, given that the student has long hair. _________h. The probability that a student has long hair, given that the student is male. _________i. Of all the female students, the probability that a student has short hair. ________j. Of all students with long hair, the probability that a student is female. _________k. The probability that a student is female or has long hair.…
A test was given to a group of students. The grades and gender are summarized below A B C Total Male 18 5 8 31 Female 3 2 20 25 Total 21 7 28 56 If one student is chosen at random from those who took the test,Find the probability that the student got a 'B' GIVEN they are female.
Full Time Part Time Boys 3 10 13 Girls 16 11 27 total 19 21 40 A student selected at random. What is the probability that the selected student is from girls given that she is from part time?
A test was given to a group of students. The grades and gender are summarized below A B C Total Male 4 2 3 9 Female 8 5 9 22 Total 12 7 12 31 If one student is chosen at random from those who took the test,Find the probability that the student got a 'B' GIVEN they are male.
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A test was given to a group of students. The grades and gender are summarized below A B C Total Male 6 12 18 36 Female 3 8 14 25 Total 9 20 32 61 If one student is chosen at random from those who took the test,Find the probability that the student got a 'B' GIVEN they are male.
33% of all college students major in STEM (Science, Technology, Engineering, and Math). If 38 college students are randomly selected, find the probability that a. Exactly 11 of them major in STEM. b. At most 11 of them major in STEM. c. At least 14 of them major in STEM. d. Between 10 and 15 (including 10 and 15) of them major in STEM. Round all answers to 4 decimal places.

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