When considering effects from eliminating the penny as a unit of currency in the United States, the author randomly selected 100 checks and recorded the cents portions of those checks. The table below lists those cents portions categorized according to the indicated values. Use a 0.05 significance level to test the claim that the four categories are equally likely. The author expected that many checks for whole dollar amounts would result in a disproportionately high frequency for the first category, but do the results support that expectation?

Conduct the hypothesis test and provide the test statistic, critical value and or P-value, and state the conclusion.

Transcribed Image Text:

Cents portion of check 0-24 25-49 50–74 75-99 Number 61 17 10 12