The obtained value of the appropriate statistic for testing

Assignment Help Applied Statistics

Reference no: EM13773450

1. For a given N, the interval that bounds the population mean at the 99% confidence level is ____ that which bounds the population mean at the 95% confidence level

A. equal to

B. greater than

C. less than

D. can't be determined

2. When using the t test, we reject H₀ ____.
A. if t_obt£ t_crit

B. if | t_obt | ³ | t_crit |

C. if | t_obt | £ | t_crit |

D. if t_obt³ t_crit

3. A researcher believes that women today weigh less than in previous years. To investigate this belief, he randomly samples 41 adult women and records their weights. The scores have a mean of 111 lbs. and a standard deviation of 12.4. A local census taken several years ago shows the mean weight of adult women was 115 lbs.

The obtained value of the appropriate statistic for testing H₀ is ____.

A. t_obt = -2.07

B. t_obt = +3.07

C. t_obt = -1.32

D. t_obt = +0.32

4. A researcher believes that women today weigh less than in previous years. To investigate this belief, he randomly samples 41 adult women and records their weights. The scores have a mean of 111 lbs. and a standard deviation of 12.4. A local census taken several years ago shows the mean weight of adult women was 115 lbs.

The df for determining t_crit = ____.

A. 41

B. 40

C. 39

D. need more information

5. If µ = 30, s = 5.2, = 28.0, s = 6.1 and N = 13, the value of the most powerful statistic to test the significance of the sample mean is ____.

A. -1.18

B. 1.96

C. 2.18

D. -1.39

6. Confidence interval is defined as ____.

A. a range of values that probably contains the population value

B. a range of values that probably contains the population mean

C. a range of values that probably contain the population standard deviation

D. a range of values that contains the population mode

Reference no: EM13773450

Questions Cloud

Write a chemical equation that describes the dissolution : The titration is complete after 108.9 mL of the acid has been added. What is the mass in grams of each substance in the mixture?

Issue became a hot button issue for the industry : First, choose the segment of the Hospitality Industry that interests you the most: Foodservice, Lodging, Travel & Tourism. NEXT, choose an industry hot topic or current issue that is affecting that industry.

Read the articles about two famous thinkers : Select and read the articles about two famous thinkers. Find additional articles in the University Library or on the Internet.

Write about any aspect of the story the metamorphosis : Write about any aspect of The story the Metamorphosis you would like, provided that your post is not a summary and that it is 150 WORDS.

The obtained value of the appropriate statistic for testing : 1. For a given N, the interval that bounds the population mean at the 99% confidence level is ____ that which bounds the population mean at the 95% confidence level. A. equal to B. greater than C. less than D. can't be determined

Explain why is it necessary to have principles for policies : Be sure to list your references at the end of your post a minimum of two references. References must be in APA citation format. All posts must be a minimum of 300 words combined. Why is it necessary to have principles for policies

Distribution of survey instrument within correction facility : There are four parts to this Project, each of which is worth a quarter of the Project Paper grade: Distribution of the survey instrument within a corrections facility and Research of the issues presented based on survey results

Impact infiltration and evaporation from the ground : How would drought conditions impact infiltration and evaporation from the ground?

Represent valid comments : Java, C#, and C++ all allow use of comments. Which of the following represent(s) valid comments in these three languages

User Account

All Pages