A recent study reported the mean body mass index (BMI) for adults in the United States was 26.8. A researcher believes the mean

Question

3 years ago

7

A recent study reported the mean body mass index (BMI) for adults in the United States was 26.8. A researcher believes the mean

BMI of marathon runners is less than 26.8. A random sample of 35 marathon runners had a mean BMI of 22.7 with a standard deviation of 3.1. The researcher will conduct a one-sample t-test for a population mean. Have the conditions for inference been met

Mathematics

2 answers:

Korolek [52] · Answer 1 · 2022-03-14T00:31:58+03:00

Korolek [52]3 years ago

7 0

No, because marathon runners are not a representative sample of all adults in the United States.

Svetllana [295] · Answer 2 · 2022-03-14T02:00:06+03:00

Svetllana [295]3 years ago

4 0

Answer:

Yes

Step-by-step explanation:

We are told its random

It is aproximately Normal because the sample size is greater than 30, (35), and we have a mean and a SD.