In a preparation test, past data showed that 40% of the students came unprepared. In asample of 8 students, find the probability that:b.i.ii.at least 5 students came unprepared.exactly 6 students came unprepared.

We have given that p = 40% = 0.40 n = 8 X follows the Binomial (8, 0.40)The PMF of the Binomial…

Answered: In a preparation test, past data showed…

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...

See similar textbooks

Similar questions

In a hospital lottery, 2.4 million tickets are sold; there are 16 grand prizes of new homes worth approximately two million dollars, and 70 second prizes of cars valued between $40,000 and $60,000. What is the probability of winning a second prize in this lottery? i. Approach: ii. Probability of winning second prize:
33% of all college students major in STEM (Science, Technology, Engineering, and Math). If 39 college students are randomly selected, find the probability that d. Between 7 and 12 (including 7 and 12) of them major in STEM.
In a review class of 80 students, 70 passed the board exam. If a student is selected at random, what is the probability that he passed?
The probability that a person in the US has a type A positive blood is 30%. Three unrelated people in the US are selected at random. a. Find the probability that all three have A positive blood. b. Find the probability that none of the three have type a positive blood. c. Find the probability that at least one of the three has A positive blood.
b. A survey of teenagers showed that 75% of them spend their pocket money on clothing. Find the probability that among the 6 teenagers selected at random, at most 2 spend their pocket money on clothing.
Suppose that a screening test diagnoses 90% of sick people positive and 90% of healthy people negative. Assume that 15% of those screened are sick. If a screened person is chosen at random, then the probability of having a negative diagnosis is: O a. 0.78 b. 0.0192 C. 0.981 O d. 0.109 O e. 0.22
Of the patients at a cardiac rehabilitation centre, 36% lead a sedentary lifestyle and have had a heart attack. If 78% of the patients lead a sedentary lifestyle, find the probability that a randomly selected patient has had a heart attack, given that he or she leads a sedentary lifestyle. Answer:
Suppose the probability that a randomly selected PGA Tour player uses a Titleist brand golf ball is 0.6. For a sample of 10 PGA Tour players: a. find the probability that more than 7 use a Titleist brand golf ball. b. find the probability that at most 5 is using a Titleist brand golf ball Show your works and use the table.
The Wilson family had 9 children. Assuming that the probability of a child being a girl is 0.5, find the probability that the Wilson family had: at least 6 girls? At most 4 girls?
A group of people were asked if they had run a red light in the last year. 189 responded "yes", and 253 responded "no".Find the probability that if a person is chosen at random, they have run a red light in the last year.
According to a recent study, 3 in every 8 women has been a victim of domestic abuse. This probability was obtained from a survey of 1,000 adult women. Suppose we randomly sample 25 women and find that 7 have been abused. Complete parts a through c below. G a. What is the probability of observing 7 or more abused women in a sample of 25 if the proportion p of women who are victims of domestic abuse is really p= ㅎ? The probability of observing 7 or more abused women in a sample of 25 is (Round to four decimal places as needed.)
College students were surveyed to check what they favored between basketball, football or baseball. The result of the survey is listed in the table below. Favorite sports Basketball Football Baseball Total Male 22 40 15 Female 45 12 16 Total If three students from this group are selected at random, find the probability that All students’ favors football. Two students favor basketball and one favors baseball. None of the students favors baseball.

SEE MORE QUESTIONS

Recommended textbooks for you

A First Course in Probability (10th Edition)

Probability

ISBN:

9780134753119

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability

Probability

ISBN:

9780321794772

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability (10th Edition)

Probability

ISBN:

9780134753119

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability

Probability

ISBN:

9780321794772

Author:

Sheldon Ross

Publisher:

PEARSON

SEE MORE TEXTBOOKS

In a preparation test, past data showed that 40% of the students came unprepared. In a sample of 8 students, find the probability that: b. i. ii. at least 5 students came unprepared. exactly 6 students came unprepared.