Question

75% of students at a College receive financial aid. We surveyed 110 randomly selected students. a)...

75% of students at a College receive financial aid. We surveyed 110 randomly selected students.

a) Find the mean and standard deviation for the number of students in the survey that receive financial aid using the Binomial model.

b) Use binomcdf to determine the probability that at least 81 of the 110 students in the survey receive financial aid.

c) Approximate the Binomial with the Normal by using normalcdf to estimate the same probability as in Question b.

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A study at a community college shows that, of the 75 randomly selected first year students,...
A study at a community college shows that, of the 75 randomly selected first year students, 23 experienced stress. Of the 81 randomly selected second year students, 38 experienced stress. (Let p1 be the proportion of first year students experienced stress and p2 the proportion of second year students experienced stress). Find a 98% confidence interval for the difference in proportions. Round answers to two decimal places. ? < p1−p2 < ?
when 294 college students are randomly selected and surveyed, it is found that 130 own a...
when 294 college students are randomly selected and surveyed, it is found that 130 own a car. Find a 90% confidence interval for the proportion of all college students who own a car. Show all work!!
A university dean states that the proportion of students who receive some sort of financial aid...
A university dean states that the proportion of students who receive some sort of financial aid has increased compared to 55% of students who received financial aid over the last several years. The dean randomly selects 200 students and finds that 118 of them are receiving aid. Form the hypothesis to test the dean’s statement. Conduct this test and explain if you support the dean’s statement using 5% significance level for this test.
In a study of government financial aid for college​ students, it becomes necessary to estimate the...
In a study of government financial aid for college​ students, it becomes necessary to estimate the percentage of​ full-time college students who earn a​bachelor's degree in four years or less. Find the sample size needed to estimate that percentage. Use a0.04 margin of error and use a confidence level of 90​%. Complete parts​ (a) through​ (c) below. a. Assume that nothing is known about the percentage to be estimated. nequals=nothing ​(Round up to the nearest​ integer.) b. Assume prior studies...
In a study of government financial aid for college​ students, it becomes necessary to estimate the...
In a study of government financial aid for college​ students, it becomes necessary to estimate the percentage of​ full-time college students who earn a​ bachelor's degree in four years or less. Find the sample size needed to estimate that percentage. Use a 0.02 margin of error and use a confidence level of 90​%. Complete parts​ (a) through​ (c) below. a. Assume that nothing is known about the percentage to be estimated. n=______d up to the nearest​ integer.) b. Assume prior...
In a study of government financial aid for college​ students, it becomes necessary to estimate the...
In a study of government financial aid for college​ students, it becomes necessary to estimate the percentage of​ full-time college students who earn a​ bachelor's degree in four years or less. Find the sample size needed to estimate that percentage. Use a 0.01 margin of error and use a confidence level of 95​%. Complete parts​ (a) through​ (c) below. a. Assume that nothing is known about the percentage to be estimated. ___ ​(Round up to the nearest​ integer.) b. Assume...
Suppose that 56% of all college students are female and that we randomly select 15 college...
Suppose that 56% of all college students are female and that we randomly select 15 college students. a) What is the probability that exactly 8 of the students will be female? b) What is the probability that 10 or more of the students will be female? c) What is the mean number μ of females in such randomly selected groups of 15 students? d) What is the standard deviation σ of the number of females in such randomly selected groups...
A certain flight arrives on time 81 percent of the time. Suppose 122 flights are randomly...
A certain flight arrives on time 81 percent of the time. Suppose 122 flights are randomly selected. Use the normal approximation to the binomial to approximate the probability that ​(a) exactly 110 flights are on time. ​(b) at least 110 flights are on time. ​(c) fewer than 110 flights are on time. ​(d) between 110 and 111, inclusive are on time.
In a study of government financial aid for college students, it becomes necessary to estimate the...
In a study of government financial aid for college students, it becomes necessary to estimate the percentage of full-time college students who earn a bachelor's degree in four years or less. Find the sample size needed to estimate that percentage. Use a 0.05 margin of error and use a confidence level of 90 %. Complete parts (a) through (c) below. a. Assume that nothing is known about the percentage to be estimated. n = __ (Round up to the nearest...
In a study of government financial aid for college​ students, it becomes necessary to estimate the...
In a study of government financial aid for college​ students, it becomes necessary to estimate the percentage of​ full-time college students who earn a​ bachelor's degree in four years or less. Find the sample size needed to estimate that percentage. Use a 0.02 margin of error and use a confidence level of 99​%. Complete parts​ (a) through​ (c) below. Assume that nothing is known about the percentage to be estimated. nequals nothing ​(Round up to the nearest​ integer.) a. n=...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT