Referring to Exercise 10.51, denote by p1 and p2 the population proportions in the two groups who have In Exercise 10.51
Random samples of 250 persons in the 30- to 40-year age group and 250 persons in the 60- to 70-year age group are asked about the average number of hours they sleep per night, and the following summary data are recorded.

Do these data demonstrate that the proportion of persons who have

Transcribed Image Text:

Hours of Sleep Age s8 8 Total 30-40 173 77 250 60-70 120130 250 Total 293 207 500