Fear of darkness is a common emotion. The following data were obtained by asking 200 individuals in each age group whether they had serious fears of darkness. At a = 0.01 do we have sufficient evidence to reject the hypothesis that €œThe same proportion of each age group has serious fears of darkness€?

a. The above table is an incomplete contingency table even though at first glance it might appear to be multinomial. Explain why.
b. Solve using the p-value approach.
c. Solve using the classical approach

Transcribed Image Text:

Age Group No. Who Fear Darkness Elementary Jr. High Sr. High College Adult 49 36 114 83 72