Refer to the data for problem 8.

a. What does the null hypothesis of independence claim, in practical terms, for this situation?

b. How many stockholders responding “Very likely” would you expect to find in this sample if response were independent of stockholder/nonstockholder classification?

c. Find the table of expected counts, assuming independence.

d. Find the chi-squared statistic.

e. How many degrees of freedom does the chi-squared test have?

TABLE 17.4.4 Responses to the Opinion Poll on the Chances of Another Big Crash in the Stock Market Stockholders 18 41 52 19 Nonstockholders 26 65 68 31 13 Total Very likely Somewhat likely Not very likely Not likely at all Not sure 8 Total