Mathematics, 21.04.2020 04:48 ovoxotas
Does secondhand smoke increase the risk of a low weight birth? A baby is "low birth weight" if it weighs less than 5.5 pounds at birth. According to the National Center of Health Statistics, about 7.8% of all babies born in the U. S. are categorized as low birth weight. Researchers randomly select 1200 babies whose mothers had extensive exposure to secondhand smoke during pregnancy. 10.4% of the sample are categorized as low birth weight. Which of the following are the appropriate null and alternative hypotheses for this research question. Group of answer choices H 0 H 0 H 0 : p = 0.078 p = 0.078 p = 0.078 H a H a H a : p ≠ 0.078 p ≠ 0.078 p ≠ 0.078 H 0 H 0 H 0 : p = 0.78 p = 0.78 p = 0.78 H a H a H a : p > 0.78 p > 0.78 p > 0.78 H 0 H 0 H 0 : p = 0.104 p = 0.104 p = 0.104 H a H a H a : p ≠ 0.104 p ≠ 0.104 p ≠ 0.104 H 0 H 0 H 0 : μ = 0.104 μ = 0.104 μ = 0.104 H a H a H a :
Answers: 2
Mathematics, 21.06.2019 17:10
The average number of vehicles waiting in line to enter a parking lot can be modeled by the function f left parenthesis x right x squared over 2 left parenthesis 1 minus x right parenthesis endfraction , where x is a number between 0 and 1 known as the traffic intensity. find the rate of change of the number of vehicles waiting with respect to the traffic intensity for the intensities (a) xequals0.3 and (b) xequals0.6.
Answers: 1
Mathematics, 21.06.2019 20:30
Solve this riddle: i am an odd number. i an less than 100. the some of my digit is 12. i am a multiple of 15. what number am i?
Answers: 1
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