Under 20 20 - 35 36 - 50 51 - 65 Over 65 27 25 66 65 27
A sociologist is studying the age of the population in Blue Valley. Ten years ago, the population was such that 19% were under 20 years old, 12% were in the 20- to 35-year-old bracket, 31% were between 36 and 50, 23% were between 51 and 65, and 15% were over 65. A study done this year used a random sample of 210 residents. This sample is given below. At the 0.01 level of significance, has the age distribution of the population of Blue Valley changed?
(ii) Find the sample test statistic. (Round your answer to two decimal places.)
(iii) Find or estimate the P-value of the sample test statistic.
a) P-value > 0.100
b) 0.050 < P-value < 0.100
c) 0.025 < P-value < 0.050
d) 0.010 < P-value < 0.025
e) 0.005 < P-value < 0.010
f) P-value < 0.005
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