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Chapter 13: Q. 62 (page 768)

62. degrees of freedom -denominator: df(denom)=-----

Short Answer

Expert verified

The degree of freedom in the denominator is 15.

Step by step solution

01

Given explanation

Evaluate the data of five teenagers in each region of the country to estimate the degree of freedom in the denominator:

Northeast
South
West
Central
East
16.3
16.9
16.4
16.2
17.1
16.1
16.5
16.5
16.6
17.2
16.4
16.4
16.6
16.5
16.6
16.5
16.2
16.1
16.4
16.8
02

Explanation

Using the calculator Ti-83to calculate degree of freedom in denominator. So, click on STAT →press 1→EDIT, then put the weights of different groups data into the list L1,L2,and L3. The screenshot is:

03

Explanation

Then, press STAT →arrow over the TESTS →arrow down to ANOVA →Press var then select1,press var then select 2,press var then select 3,press var then select4and press var then select 5to fill the values ofL1,L2,L3,L4and L5. The screen shot is:

04

Explanation

Press ENTER. Then, the screenshot for the degree of denominator is,

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Most popular questions from this chapter

Suppose a group is interested in determining whether teenagers obtain their driver's licenses at approximately the same average age across the country. Suppose that the following data are randomly collected from five teenagers in each region of the country. The numbers represent the age at which teenagers obtained their driver's licenses,

NortheastSouthWestCentralEast16.316.916.416.217.116.116.516.516.617.216.416.416.616.516.616.516.216.116.416.8x¯=s2=

Enter the data into your calculator or computer.

p-value = _______

King Manuel I, Komnenus ruled the Byzantine Empire from Constantinople (Istanbul) during the years 1145to 1180A.D. The empire was very powerful during his reign, but declined significantly afterwards. Coins minted during his era were found in Cyprus, an island in the eastern Mediterranean Sea. Nine coins were from his first coinage, seven from the second, four from the third, and seven from a fourth. These spanned most of his reign. We have data on the silver content of the coins:

Did the silver content of the coins change over the course of Manuel’s reign?

Here are the means and variances of each coinage. The data are unbalanced.

A video game developer is testing a new game on three different groups. Each group represents a different target market for the game. The developer collects scores from a random sample from each group. The results are shown in the Table.

Group AGroup BGroup C10115110110814910998160198107112186111126160

What are the SSwithin and MSwithin ?

What is the df for the denominator?

Use the following information to answer the next two exercises. There are two assumptions that must be true in order to perform anF test of two variances.

What is the other assumption that must be true?
See all solutions

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