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Chapter 11: Q. 46 (page 756)

Online banking A recent poll conducted by the Pew Research Center asked a random sample of 1846Internet users if they do any of their banking online. The table summarizes their responses by age. 23Is there convincing evidence of an association between age and use of online banking for Internet users?

Short Answer

Expert verified

Yes,here convincing evidence of an association between age and use of online banking for Internet users.

Step by step solution

01

Given information 

We have to tell about here convincing evidence of an association between age and use of online banking for Internet users.

02

Explanation 

The significamce level of 伪is 0.05.

There is no link between online banking and age.

The expected frequencies are:

E11=r1脳c1n=1088脳3951846鈮�232.81

Finally, after determining all of the other characteristics, we arrive at

E24=r2脳c4n=158脳3561846鈮�146.18

Hypothesis Test:

蠂2=鈭�(O-E)2E

Using the above formula we get=43.79

P<0.05鈬�RejectH0

There is evidence that there is a link between online banking and age.

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Most popular questions from this chapter

A random sample of traffic tickets given to motorists in a large city is examined. The tickets are classified according to the race or ethnicity of the driver. The results are summarized in the following table.

The proportion of this city's population in each of the racial/ethnic categories listed is as follows.

We wish to test H0: The racial/ethnic distribution of traffic tickets in the city is the same as the racial/ethnic distribution of the city's population.

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Sorry, no chi-square How do U.S. residents who travel overseas for leisure differ from

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Occupation
Leisure travelers (%)
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Professional/technical
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7
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7
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100
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