State the null and alternative hypotheses

Assignment Help Basic Statistics
Reference no: EM131087404

Most US adults have social ties with a large number of people, including friends, family, co-workers, and other acquaintances. It is nearly impossible for most people to reliably list all the people they know, but using a mathematical model, social analysts estimate that, on average, a US adult has social ties with 634 people.1A survey of 1700 randomly selected US adults who are cell phone users finds that the average number of social ties for the cell phone users in the sample was 664 with a standard deviation of 778. Does the sample provide evidence that the average number of social ties for a cell phone user is significantly different from 634, the hypothesized number for all US adults?

  • State the null and alternative hypotheses.
  • Give the test statistic and the -value and state the conclusion of the test.
  • Does the sample provide evidence that the average number of social ties for a cell phone user is significantly different from , the hypothesized number for all US adults?

Reference no: EM131087404

Questions Cloud

Find the nash equilibrium in which both players produce : Let c1 = 25 and c2 = 55. Find the Nash equilibrium in which both players produce, and calculate both firms' profits
Correlation coefficient between two variables : Does a high correlation coefficient between two variables indicate that changes in one of the variables necessarily causes changes in the other variable?
What is the approximate forward exchange rate : Assume the current U.S. dollar-British spot rate is 0.6993£/$. If the current nominal one-year interest rate in the U.S. is 5% and the comparable rate in Britain is 6%, what is the approximate forward exchange rate for 360 days?
Can something be done about it or they are bound to happen : Can something be done about it or they are bound to happen?
State the null and alternative hypotheses : State the null and alternative hypotheses. Give the test statistic and the -value and state the conclusion of the test.
What is the reponse time when the load is low : What is the reponse time when the load is low?
What is the probability distribution : (a) What is the probability distribution of X? Specify any relevant parameter values. (b) What is the probability that at most one of the eight tablets will be defective? (ANSWERS WITH AN EXPLANATION PLEASE)
Draw a kripke structure that describes this situation : Draw a Kripke structure that describes this situation.
Assume the underlying distribution : Use the-distribution and the sample results to complete the test of the hypotheses. Use a 5% significance level. Assume the results come from a random sample, and if the sample size is small, assume the underlying distribution is relatively normal..

Reviews

Write a Review

Basic Statistics Questions & Answers

  A discuss what is meant by quality control and quality

questiona discuss what is meant by quality control and quality improvement. b what are the limitations of a quality

  At the optimal solution what is the amount of slack

max z 3x 9ysubject to 20x 32y 16004x 2y 240y 40x y 0at the optimal solution what is the amount of slack

  Productivity enhancers who are comfortable with technology

In an online survey of 4001 respondents, 8% were classified as productivity enhancers who are comfortable with technology and use the internet for its practical value. Suppose you select a sample of 400 students at your school, and the population ..

  Create interval estimate for true proportion of retirement

Formulate an 84% interval estimate for the true proportion of employees within one year of retirement in the entire corporation.

  Data file description

Describe the context of the data set. Cite a previous description if the same data set is used from a previous assignment. To increase formal tone of the DAA, avoid first-person perspective "I." For example, do not write, "I ran a scatter plot sho..

  A new muscle relaxant is available researchers from the

a new muscle relaxant is available. researchers from the firm developing the relaxant have done studies that indicate

  Find winter mean and standard deviation

Identify any points that lie outside a 95% Confidence Level (Mean plus or minus two standard deviations) using the above winter mean and standard deviation. Explain your answer. Graph the data.

  Hypothesis testing on foundations of several buildings

Concrete blocks are to be used in the foundations of several buildings. The specifications state that the minimum arithmetic mean compressive strength of a sample of blocks must be 1,000 pounds per square inch (psi).

  Random sample and use in hypothesis testing

Why is it important that a sample be random and representative when conducting hypothesis testing?

  In establishing a set of hypotheses which we are testing

in establishing a set of hypotheses which we are testing we rely on the standard error. what two parameters are used to

  Cyclist word problem on linear equations

A cyclist traveled at a rate of 32 mph to visit a nearby town. The cyclist averaged 10 mph on the return trip. If the round trip took 6.3 hours, find the distance to the nearby town.

  Calculate the mean median mode standard deviation and range

include a title page with your assignment in current apa. answers must be clearly labeled and appear in consecutive

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd