A study sought to investigate the relationship between age and whether or not a person is afraid of the dark using a random sample of 25 individuals under age 20, a random sample of 24 individuals aged 20 to 60, and a random sample of 26 individuals who are over 60 years old. Here are the results:
Do the data provide convincing statistical evidence that the distribution of being afraid of the dark or not differs for these three age groups? Use =0.01.
DO:
x² = __________(Enter at least 2 decimal places)
df = __________(Enter an integer)
P-value = __________
