question archive The CDC publishes charts on Body Mass Index (BMI) percentiles for boys and girls of different ages
The CDC publishes charts on Body Mass Index (BMI) percentiles for boys and girls of different ages
Subject:MathPrice: Bought3
The CDC publishes charts on Body Mass Index (BMI) percentiles for boys and girls of different ages. Based on the chart for girls, the mean BMI for 6-year-old girls is listed as 15.2 kg/m2. The data from which the CDC charts were developed is old and there is concern that the mean BMI for 6-year old girls has increased. The BMIs of a random sample of 30 6-year-old girls are given below:
24.5
16.3
15.7
20.6
15.3
14.5
14.7
15.7
14.4
13.2
16.3
15.9
16.3
13.5
15.5
14.3
13.7
14.3
13.7
16
14.2
17.3
19.5
21.8
16.4
15.4
19.3
13.9
17.6
15.5
I calculated the mean (16.176667) and the std dev (2.6266123)
How do I get the Z-value and P-value?
