A recent survey found that 79% of first-year college students were involved in volunteer work at...
A recent survey found that 79% of first-year college students were involved in volunteer work at least occasionally. Suppose a random sample of 14 college students is taken. Find the probability that at least 11 students volunteered at least occasionally.
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A recent survey found that 79% of first-year college students
were involved in volunteer work at...
A recent survey found that 87% of first-year college students were involved in volunteer work at...
A recent survey found that 87% of first-year college students were involved in volunteer work at least occasionally. Suppose a random sample of 11 college students is taken. Find the probability that exactly 7 students volunteered at least occasionally.
QUESTION 1 College students Suppose a recent study of 1,000 college students in the U.S. found...
QUESTION 1 College students Suppose a recent study of 1,000 college students in the U.S. found that 8% of them do not use Facebook. Which of the following describes the population for this example? 1. All college students in the U.S. 2. The 1,000 college students who participated in the study, 3. All college students in the U.S. who do not use Facebook 4. The 8% of college students who do not use Facebook. QUESTION 2 Suppose you want to...
In a recent poll, 4545% of survey respondents said that, if they only had one child,...
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)...
According to a college survey, 22% ofall students work full time. a) Find the mean and...
According to a college survey, 22% ofall students work full time. a) Find the mean and standard deviation for the random variable X, representing the number of students who work full time in sample of size 16. Find the probability that from a random sample of size 10, three do not work full time. b)
7. A survey of 800 college students is conducted to see whether they are a new...
7. A survey of 800 college students is conducted to see whether they are a new student this quarter or not. The random variable respresents the number of students enrolled as a new student. Is this a binomial experiment? Why or why not? Yes or No (Circle One) 8. A recent survey found that 79% of all adults over 50 wear sunglasses for driving. In a random sample of 80 adults over 50, what is the mean and standard deviation...
Suppose that the weight students gain in their first year of college is Normally distributed with...
Suppose that the weight students gain in their first year of college is Normally distributed with a mean of 10 pounds and a standard deviation of 2 pounds. (a) What is the probability that a randomly selected student will gain between 6 and 8 pounds? (b) Suppose we pick 5 students at random. What is the probability at least one will gain between 6 and 8 pounds? (c) If 30 students are randomly selected, what is the probability that the...
7. A survey of first-year and second-year students at a large university asked if students were satisfied with college life. We are interested in whether there is a difference between first and secon...
7. A survey of first-year and second-year students at a large university asked if students were satisfied with college life. We are interested in whether there is a difference between first and second-year students with respect to this question. You performed a hypothesis test and found there was no evidence of a difference between first and second-year students in response to this question. You based th on a test using alpha -0.01. Would you have made the same decision at...
A club with 45 college students is doing volunteer work this semester. Each student is volunteering...
A club with 45 college students is doing volunteer work this semester. Each student is volunteering at one of four locations. Here is a summary. Location Number of students Soup kitchen 18 Hospital 13 Nursing home 4 Pet shelter 10 Three students from the club are selected at random, one at a time without replacement. What is the probability that none of the three students volunteer at the nursing home? Do not round your intermediate computations. Round your final answer...
No MLC help] A national survey found that 61% of college students attend four year institutions...
No MLC help] A national survey found that 61% of college students attend four year institutions while the rest attend two-year institutions. Males make up 44% ofthe students in the four-year institutions and 41% ofthe students in the two-year institutions. Let M represent the event the student is male and T represent 5 the event the student attends a two-year institution a 3 pts] No MILC helpl Create a tree diagram OR a hypothetical table to represent this situation. b....
Suppose a survey of 1000 students is obtained from a college whose population is 10,000 students....
Suppose a survey of 1000 students is obtained from a college whose population is 10,000 students. The sample was obtained by selecting at random from the population without replacement, meaning that no student could be selected twice. Although it is true that if the probability of selecting any one particular student is equal to the probability of selecting any other particular student then the sample is random, in this case, sampling was done without the probability of selecting the first...
QUESTION 1 College students Suppose a recent study of 1,000 college students in the U.S. found that 8% of them do not use Facebook. Which of the following describes the population for this example? 1. All college students in the U.S. 2. The 1,000 college students who participated in the study, 3. All college students in the U.S. who do not use Facebook 4. The 8% of college students who do not use Facebook. QUESTION 2 Suppose you want to...
According to a college survey, 22% ofall students work full time. a) Find the mean and standard deviation for the random variable X, representing the number of students who work full time in sample of size 16. Find the probability that from a random sample of size 10, three do not work full time. b)
Suppose that the weight students gain in their first year of college is Normally distributed with a mean of 10 pounds and a standard deviation of 2 pounds. (a) What is the probability that a randomly selected student will gain between 6 and 8 pounds? (b) Suppose we pick 5 students at random. What is the probability at least one will gain between 6 and 8 pounds? (c) If 30 students are randomly selected, what is the probability that the...
7. A survey of first-year and second-year students at a large university asked if students were satisfied with college life. We are interested in whether there is a difference between first and second-year students with respect to this question. You performed a hypothesis test and found there was no evidence of a difference between first and second-year students in response to this question. You based th on a test using alpha -0.01. Would you have made the same decision at...
No MLC help] A national survey found that 61% of college students attend four year institutions while the rest attend two-year institutions. Males make up 44% ofthe students in the four-year institutions and 41% ofthe students in the two-year institutions. Let M represent the event the student is male and T represent 5 the event the student attends a two-year institution a 3 pts] No MILC helpl Create a tree diagram OR a hypothetical table to represent this situation. b....
Suppose a survey of 1000 students is obtained from a college whose population is 10,000 students. The sample was obtained by selecting at random from the population without replacement, meaning that no student could be selected twice. Although it is true that if the probability of selecting any one particular student is equal to the probability of selecting any other particular student then the sample is random, in this case, sampling was done without the probability of selecting the first...
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