Formulate and test hypotheses

Assignment Help Basic Statistics
Reference no: EM13113407

A marketing survey involves product recognition in New York and California. Of 600 New Yorkers surveyed, 195 knew the product while 150 out of 614 Californians knew the product. At the 0.05 level of significance, test the claim that the recognition rates are the same in both states.

a. Formulate the hypotheses.

b. Test these hypotheses and draw a conclusion about the claim. (Show your work giving the critical and test values of z and state your conclusion.

Any assistance you can offer for this problem would be appreciated.

 

Reference no: EM13113407

Questions Cloud

Statistics hypothesis testing-levels of significance : Based on the information in part (a), what decision should the director make about the books used for the courses if the goal is to keep the cost below $300.00?
Test claim that different vehicle categorie-same mean mpg : Use a 5% significance level (95% confidence level) to test the claim that the different vehicle categories have the same mean MPG.
Formulate and test hypothesis-general practice : A medical school claims that more than 32% of its students plan to go into general practice. It is found that among a random sample of 130 students, 46 of them plan to go into general practice.
What is the concentration of nitrogen gas at equilibrium : For the reaction: N2(g) + 2 O2(g) ? 2 NO2(g), Kc = 8.3 × 10-10 at 25°C. What is the concentration of N2 gas at equilibrium when the concentration of NO2 is twice the concentration of O2 gas.
Formulate and test hypotheses : A marketing survey involves product recognition in New York and California. Of 600 New Yorkers surveyed, 195 knew the product while 150 out of 614 Californians knew the product.
Sample difference of mean-hypothesis testing : A reasearcher wishes to determine whether people with high blood pressure can reduce their blood pressure by following a particular diet. Use the sample data below to test the claim that the treatment population mean is smaller than the control po..
How large sample is needed to estimate true proportion : How Large a sample is needed to estimate the true proportion of homeowners who have vegetable gardens to within 3 percentage point 92% confidence.
What is the vapor pressure of this solution at 30 degrees : A solution is prepared by dissolving 396g of sucrose (C2H22011) in 624g of water. What is the vapor pressure of this solution at 30 degrees.
Information about statistics problem : An experiment is designed to test the effectiveness of a specific type of gender selection process, using 15 couples trying to have baby girls.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Testing instructor-s claim at level of significance

Exam is given to 20 randomly chosen students and their average length of t time needed to finish exam was 54 minutes with standard deviation of 5.99 minutes. Test instructor's claim at the 0.05 level of significance.

  Explain decision making under certainty or uncertainty

Is the transportation model the example of decision making under certainty or decision making under uncertainty? Provide the real-world example illustrtating why it is certainty or uncertainty.

  Obtaining a test statistic and p-value

Obtain a test statistic and p-value. Interpret the results at = .01.

  Problem based on decision tree

Problem based on decision tree - Evaluate the strategy that maximizes the manufacturer's expected net earnings.

  Standard deviation of the filling process

CCI is unable to adjust the mean of the filling process. However, it is able to adjust the standard deviation of the filling process.

  Problem related to down syndrome

Suppose that 1 out of 500 infant's are born with Down's Syndrome.

  Claiming to accept an error rate

The average speed of greyhound dogs is about 18.8 meters per second. A particular greyhound breeder claims that her dogs are faster than the average greyhound. In a sample of 45 dogs, they ran, on average, 19.2 meters per second with a standard de..

  Error-sample mean and population mean

The error between the sample mean and the population mean for a sample of n = 16 is 5 points and the error between a sample men and population mean for a sample of n = 100 is 2 points. Explain the difference in the standard error??

  Computing difference scores for data

Compute the difference scores for following data from repeated-measures study.

  Determining confidence interval for true mean weight

Develop a 90% confidence interval for the true mean weight. What sample size would be necessary to estimate the true weight with an error of +/- 0.03 grams with 90% confidence?

  Critical value approach to determine the mean age

At the 5% significance level, can the station conclude that the mean age of its listeners is not 25 yrs. Formulate and test the appropriate hypotheses. Use the critical value approach.

  Selecting a crew member at random

If we select a crew member at random, what is the probability the crew member earns:

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