Mathematics, 05.05.2020 18:46 jamskid
Medical researchers conducted a national random sample of the body mass index (BMI) of 654 women aged 20 to 29 in the U. S. The distribution of BMI is known to be right skewed. In this sample the mean BMI is 26.8 with a standard deviation of 7.42. Are researchers able to conclude that the mean BMI in the U. S. is less than 27? Conduct a hypothesis test at the 5% level of significance. What can we conclude? Group of answer choices With a mean BMI of 26.8, the data supports the claim that the average BMI is less than 27, but the difference is not statistically significant. We fail to reject the null hypothesis that the mean BMI for women aged 20 to 29 in U. S. is 27. With a mean BMI of 26.8, the data supports the claim that the average BMI is less than 27. We reject the null hypothesis that the mean BMI for women aged 20 to 29 in U. S. is 27. Nothing. The distribution of the variable in the population is right skewed, so the conditions for use of a t-model are not met. We cannot trust that the p-value is accurate for this reason.
Answers: 3
Mathematics, 21.06.2019 15:50
Agreeting card company can produce a box of cards for $7.50. if the initial investment by the company was $50,000, how many boxes of cards must be produced before the average cost per box falls to $10.50?
Answers: 1
Mathematics, 21.06.2019 19:00
How does a low unemployment rate affect a nation's economy? a. the nation has a higher number of productive resources. b. the nation can spend more money on for unemployed people. c. the nation can save money by paying lower salaries to a large workforce. reset
Answers: 1
Medical researchers conducted a national random sample of the body mass index (BMI) of 654 women age...
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