Homework Answers
Request Answer!
We need at least 10 more requests to produce the answer.
0 / 10 have requested this problem solution
The more requests, the faster the answer.
Add Answer to:
Facebook: A study showed that two years ago, the mean time spent per visit to Facebook...
Facebook: A study showed that two years ago, the mean time spent per visit to Facebook...
Facebook: A study showed that two years ago, the mean time spent per visit to Facebook was 20.8 minutes. Assume the standard deviation is o= 8.0 minutes. Suppose that a simple random sample of 107 visits was selected this year and has a sample mean of x = 18.8 minutes. A social scientist is interested to know whether the mean time of Facebook visits has decreased. Use the a=0.10 level of significance and the P-value method with the TI-84 calculator....
ole Facebook: A study showed that two years ago, the mean time spent per visit to...
ole Facebook: A study showed that two years ago, the mean time spent per visit to Facebook was 20.2 minutes. Assume the standard deviation is o = 40 minutes. Suppose that a simple random sample of 107 visits was selected this year and has a sample mean of x = 19.2 minutes. A social scientist is interested to know whether the mean time of Facebook visits has decreased. Use the a=0.10 level of significance and the P-value method with the...
Question 10 (0.75 points) A study showed that in a certain month, the mean time spent...
Question 10 (0.75 points) A study showed that in a certain month, the mean time spent per visit to Facebook was 19.5 minutes. Assume the standard deviation of the population is 8 minutes. Suppose that a simple random sample of 100 visits in that month has a sample mean of 21.13 minutes. A social scientist is interested in knowing whether the mean time of Facebook visits has increased. Perform the hypothesis test and compute the P-value. Write down your P-value....
these two questions go together Question 10 (0.75 points) A study showed that in a certain...
these two questions go together
Question 10 (0.75 points) A study showed that in a certain month, the mean time spent per visit to Facebook! was 19.5 minutes. Assume the standard deviation of the population is 8 minutes. Suppose that a simple random sample of 100 visits in that month has a sample mean of 21.70 minutes. A social scientist is interested in knowing whether the mean time of Facebook visits has increased. Perform the hypothesis test and compute the...
Question 11 (0.75 points) In the previous question about a study that showed that in a...
Question 11 (0.75 points) In the previous question about a study that showed that in a certain month, the mean time spent per visit to Facebook was 19.5 minutes where a social scientist is interested in knowing whether the mean time of Facebook visits has increased. Based on your P-value, what is the conclusion if we test at the 0.05 level of significance? There is evidence to conclude that the mean time of Facebook visits has not increased. There is...
1) what is the p value? 2) do we have sufficent evidence to support H0? 3)...
1)
what is the p value?
2) do we have sufficent evidence to support H0?
3) does it support the claim?
Homework #8 Al KS Corp Next 8 6 7 10 Previous Question 8 of 11 (1 point) View problem in a pop-up 8.2 Section Exercise 51 (p-value, tab Facebook: A study showed that two years ago, the mean time spent per visit to Facebook was 20.8 minutes. Assume the standard deviation is o 10.0 minutes. Suppose that a simple...
A study by a web metrics firm Hitwise showed that in 2008 the mean time spent...
A study by a web metrics firm Hitwise showed that in 2008 the mean time spent per visit to Facebook was 19.5 minutes. A random sample of 100 Facebook users in 2015 showed a mean time per visit of 21.5 minutes with a standard deviation of 8.1 minutes. At a significance level of 0.05, can we conclude that the mean time per visit to Facebook has increased since 2008? (Be sure your answer is in the appropriate format.)
Consider the following hypotheses: Ho: mean= 92 Hi: mean - 92 A test is performed with a sample of size 576. The sa...
Consider the following hypotheses: Ho: mean= 92 Hi: mean - 92 A test is performed with a sample of size 576. The sample mean was 85.11 and the population standard deviation is 72. Assume that the population is approximately normal. Use the TI-84 PLUS calculator to compute the P-value. Round your answer to four decimal places (for example: 0.0138). Write only a number as your answer. Your Answer: Answer Question 10 (0.75 points) A study showed that in a certain...
A recent national survey showed that the mean amount of time high school students spent per...
A recent national survey showed that the mean amount of time high school students spent per day using Snapchat was 65 minutes, with a standard deviation of 9 minutes. Mrs. Jones, a school principal, surveyed 100 of her students and computed a sample mean of 67.6 minutes of daily Snapchat use. She would like to determine, with a .01 significance level, whether her school is significantly different from the national results. State the null and alternate hypotheses for this two-tailed...
1) A study of 100 professors showed that the time they spent on the average in...
1) A study of 100 professors showed that the time they spent on the average in creating test questions was 20.0 minutes per question. The standard deviation of the population is 1. Which of the following is the 90% confidence interval for the average number of minutes it takes to create a test question? a) (18.36, 21.64) B)(19.74, 20.26) c)(19.84, 20.16) D)(19.88, 20.12) 2) 1) A previous analysis of paper boxes showed that the standard deviation of their lengths is...
Facebook: A study showed that two years ago, the mean time spent per visit to Facebook was 20.8 minutes. Assume the standard deviation is o= 8.0 minutes. Suppose that a simple random sample of 107 visits was selected this year and has a sample mean of x = 18.8 minutes. A social scientist is interested to know whether the mean time of Facebook visits has decreased. Use the a=0.10 level of significance and the P-value method with the TI-84 calculator....
ole Facebook: A study showed that two years ago, the mean time spent per visit to Facebook was 20.2 minutes. Assume the standard deviation is o = 40 minutes. Suppose that a simple random sample of 107 visits was selected this year and has a sample mean of x = 19.2 minutes. A social scientist is interested to know whether the mean time of Facebook visits has decreased. Use the a=0.10 level of significance and the P-value method with the...
Question 10 (0.75 points) A study showed that in a certain month, the mean time spent per visit to Facebook was 19.5 minutes. Assume the standard deviation of the population is 8 minutes. Suppose that a simple random sample of 100 visits in that month has a sample mean of 21.13 minutes. A social scientist is interested in knowing whether the mean time of Facebook visits has increased. Perform the hypothesis test and compute the P-value. Write down your P-value....
these two questions go together
Question 10 (0.75 points) A study showed that in a certain month, the mean time spent per visit to Facebook! was 19.5 minutes. Assume the standard deviation of the population is 8 minutes. Suppose that a simple random sample of 100 visits in that month has a sample mean of 21.70 minutes. A social scientist is interested in knowing whether the mean time of Facebook visits has increased. Perform the hypothesis test and compute the...
Question 11 (0.75 points) In the previous question about a study that showed that in a certain month, the mean time spent per visit to Facebook was 19.5 minutes where a social scientist is interested in knowing whether the mean time of Facebook visits has increased. Based on your P-value, what is the conclusion if we test at the 0.05 level of significance? There is evidence to conclude that the mean time of Facebook visits has not increased. There is...
1)
what is the p value?
2) do we have sufficent evidence to support H0?
3) does it support the claim?
Homework #8 Al KS Corp Next 8 6 7 10 Previous Question 8 of 11 (1 point) View problem in a pop-up 8.2 Section Exercise 51 (p-value, tab Facebook: A study showed that two years ago, the mean time spent per visit to Facebook was 20.8 minutes. Assume the standard deviation is o 10.0 minutes. Suppose that a simple...
Consider the following hypotheses: Ho: mean= 92 Hi: mean - 92 A test is performed with a sample of size 576. The sample mean was 85.11 and the population standard deviation is 72. Assume that the population is approximately normal. Use the TI-84 PLUS calculator to compute the P-value. Round your answer to four decimal places (for example: 0.0138). Write only a number as your answer. Your Answer: Answer Question 10 (0.75 points) A study showed that in a certain...
Most questions answered within 3 hours.
-
1. (15%) Describe the difference between a pull (Kanban), push
and CONWIP production systems.
asked 2 minutes ago -
How does a linear regression allow you to better estimate
trends, costs, and other factors in...
asked 6 minutes ago -
QUESTION 5
The total area under the Z distribution curve is equal to:
a.
10
b....
asked 11 minutes ago -
Using Python
The variables x and y refer to numbers. Write a code segment
that prompts...
asked 25 minutes ago -
If
the coefficient of static friction between a box and the floor is
0.35 with what...
asked 27 minutes ago -
A die is designed to punch holes with a radius of 1.08 10-2 m in
a...
asked 32 minutes ago -
government can increase import through
a. export subsidies
b. tax breaks
c. increase import tax
d....
asked 32 minutes ago -
Draw the following in the proper skeletal structure or line
angle formula.
5,6,6-tribromo-3,8-dicyclopropyl-7-isopentyldodecane
asked 38 minutes ago -
Two blocks of masses m1 and m2 hang at the ends of a string that
passes...
asked 39 minutes ago -
Linear programming is an excellent technique yet is not applied
nearly enough in the “real world.”...
asked 48 minutes ago -
What three alkenes yield 3-methylpentane on catalytic
hydrogenation?
asked 48 minutes ago -
In JAVA Create a program with an array with the following
data:
50 12 31 76...
asked 50 minutes ago