Exam 16: Analysis of Categorical Data

A recent national poll showed the reading habits of adults during the last 12 months: 3 or more books 5 2 boxlss 27 1 book 38 No hooks 30 A poll in a small Midwestern town shows the following percentages: 3 or more broks 1 2 books 22 1 boxk 39 No hooks 38 Comparing the critical and observed values of the goodness-of fit chi-squared statistic and $\alpha$ = 0.05, the appropriate decision is ______.

A chi-square goodness of fit test is to be performed to see if data fit the Poisson distribution.There are 8 categories, and lambda must be estimated.How many degrees of freedom should be used?

A chi-square goodness-of-fit test to determine if the observed frequencies in seven categories are uniformly distributed has six degrees of freedom.

In a chi-square goodness-of-fit test, theoretical frequencies are also called expected frequencies.

A gasoline distributor wonders whether an individual's income level influences the grade of gasoline purchased.The following is a contingency table from a random sample of 300 individuals. Using $\alpha$ = .01, observed chi-square value is ______________.