Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

1. Find out the critical value for the one-tailed hypothesis test in which a null hypothesis is tested at 5% level of significance based upon a sample size of 25?

2. A large department store analyzed a sample of 18 credit card sales and recorded amounts charged for each of three kinds of credit cards: MasterCard, Visa and Discover. Six MasterCard sales, seven Visa and five Discover sales were recorded. The store employed ANOVA to test if the mean sales for each credit card were equal. What are the degrees of the freedom for F statistic?

3. If the critical z-value for test statistic equals 2.45, find out the value of the test statistic would guarantee no chance of making Type I error?

4. What is our decision for goodness-of-fit test with the evaluated value of chi-square of 1.273 and critical value of 13.388?

5. A manufacturer wants to raise the absorption capacity of sponge. Based upon past data, the average sponge could absorb 3.5 ounces. After redesign, the absorption amounts of sample of sponges were (in ounces): 4.1, 3.7, 3.3, 3.5, 3.8, 3.9, 3.6, 3.8, 4.0, and 3.9. What is the decision rule at 0.01 level of significance to test if the new design raised the absorption amount of sponge?

6. Two chi-square distributions were plotted on same chart. One distribution was for three degrees of freedom and other was for 12 degrees of freedom. Which distribution would tend to approach the normal distribution?

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M921538

Have any Question? 


Related Questions in Statistics and Probability

1 interpret in your own words the meaning of the computer

1. Interpret in your own words the meaning of the computer printout in Table 1. 2. Explain the meaning of the regression equation and the regression line as shown in Table 2. 3. What is meant by "partitioning the sum of ...

Through the feasted landscapes sustainability in american

Through the Feasted Landscapes Sustainability in American Topics, Chapter "The Work of the U.S. Sanitary Commission (1864)": 1. At first, who resisted civilian participation in providing food supplies and medical assista ...

During a certain week the mean price of gas was 2709 per

During a certain week the mean price of gas was $2.709 per gallon. A random sample of 35 gas stations is drawn from this population. What is the probability that the mean price for the sample was $2.697 and $2.716 that w ...

This exercise is similar to given exercise but instead of

This exercise is similar to given Exercise, but instead of announcing the probability of a particular event given their private information, the players announce whether or not the expectation of a particular random vari ...

What is the difference between dependent and independent

What is the difference between dependent and independent variables? On which side of the regression equation does each lie? Describe how Doane's rule relates to the number of allowed independent variables.  Why is this i ...

A gallup poll claims that at least 60 of adults in the

A Gallup poll claims that at least 60% of adults in the United States have used the Internet for shopping. In a survey of 1,025 randomly selected adults in the U.S., 678 said that they have used the Internet for shopping ...

The department of education would like to determine if

The Department of Education would like to determine if there are gender differences in the performance of twins on the state mandated mathematics examination. As a result, they have collected data on twelve sets of twins ...

In a poll of 2003 adults within the united states for the

In a poll of 2,003 adults within the United States for the Wall Street Journal, 57% of adults said that public education needs to be improved. Construct a 95% confidence interval for the proportion of all U. S. adults wh ...

A weight-loss company wants to statistically prove that its

A weight-loss company wants to statistically prove that its methods work. They randomly selected 10 clients who had been on the weight loss program for between 55 and 65 days. They looked at their beginning weights and t ...

1 why do researchers care how much variability exists in a

1. Why do researchers care how much variability exists in a set of data? 2. Distinguish between descriptive and inferential statistics. 3. Conceptually, what does the variance tell us about a set of data?

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen