In a survey, three out of four students said that courts show too much concern for criminals. Find the probability that of seventy randomly selected students
Exactly sixty-eight feel that courts show too much concern.
Let A be the event that a student thinks that courts show too much concern for criminals .
We are given with p = P[A] = 3/4
Note that A can be thought of as a "success" in Binomial model .
So if X be the number of students feeling that courts show too much concern then
X~ Bin( n , p=3/4) , x = 0,1,2,....,n
Here n = 70
To find P[X=68]
In a survey, three out of four students said that courts show too much concern for...
According to a survey, 86% of high school students plan to attend college. Suppose 15 high school students are randomly selected. (round all answers to four decimal places) a.) Find the probability that all of them plan to attend college. Answer b.) Find the probability that exactly eight of them plan to attend college. Answer c.) Find the probability that at most eleven of them plan to attend college. Answer d.) Find the probability that at least twelve of them...
Survey on Answering Machine Ownership in a survey, 63% of Americans said they own an answering machine. If 16 Americans are selected at random, find the probability that exactly 11 own an answering machine. Round the answer to at least four decimal places. P(11) - X
In a recent poll, 45% of survey respondents said that, if they only had one child, they would prefer the child to be a boy. Suppose you conducted a survey of 160 randomly selected students on your campus and find that 82 of them would prefer a boy. Complete parts (a) and (b) below. Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). (a) Use the normal...
In a recent poll, 4545% of survey respondents said that, if they only had one child, they would prefer the child to be a boy. Suppose you conducted a survey of 160 randomly selected students on your campus and find that 79 of them would prefer a boy.(a) Use the normal approximation to the binomial to approximate the probability that, in a random sample of 160 students, at least 79 would prefer a boy, assuming the true percentage 45%. (b)...
ame Veggie Survey 1 Vou teacher surveyed 32 fifth graders. Seventeen students said they liked corrots 20 students said they liked green beans. Six students said they didn't like either. How more said they liked both vegetables? Show your work List the steps you took to solve the problem. 2. If the teacher randomly chose one of the 32 students, what is the probability that the student would like both vegetables? Justify your answer.
A survey of 1,084 adults was asked, "Do you feel overloaded with too much information?" Suppose that the results indicated that of 540 males, 240 answered yes. Of 544 females, 276 answered yes. Construct a contingency table to evaluate the probabilities. Complete parts (a) through (d). a. What is the probability that a respondent chosen at random indicates that he/she feels overloaded with too much information? (Round to three decimal places as needed.) b. What is the probability that a...
A survey of 1,087 adults was asked, "Do you feel overloaded with too much information?" Suppose that the results indicated that of 541 males, 237 answered yes. Of 546 females, 280 answered yes. Construct a contingency table to evaluate the probabilities. Complete parts (a) through (d). a. What is the probability that a respondent chosen at random indicates that he/she feels overloaded with too much information? (Round to three decimal places as needed.) b. What is the probability that a...
A survey of 1,092 adults was asked, "Do you feel overloaded with too much information?" Suppose that the results indicated that of 545 males, 238 answered yes. Of 547 females, 278 answered yes. Construct a contingency table to evaluate the probabilities. Complete parts (a) through (d) a. What is the probability that a respondent chosen at random indicates that he/she feels overloaded with too much information? (Round to three decimal places as needed.) b. What is the probability that a...
In a survey, 66% of Americans said they own an answering machine. If 17 Americans are selected at random, find the probability that exactly 9 own an answering machine. Round your answer to three decimal places Source: USA Snapshot, USA TODAY P (9)
6. (10pt) Fifty percent of all the students in Palisades High said they eat only pizza for lunch. A random sample of three students from Palisades High is selected. What is the probability , to four decimal places, that exactly 2 eat only pizza for lunch.