Mathematics, 27.11.2019 02:31 ijohnh14
According to the american center for disease control, the percentage of cigarette smokers among american adults in 2005 was 20.9% (and therefore, the percentage of non-smokers was 79.1%). as a health psychologist, you are interested in knowing if the prevalence of smoking has changed. last year, you sampled 500 american adults and found that 72 of them reported being cigarette smokers and that 428 reported being non-smokers. perform the appropriate test. is this a goodness of fit test or a test of independence?
Answers: 3
Mathematics, 21.06.2019 17:20
7. if the value of x varies directly with the value of y, and x = 3 when y = 21. what is the valu y, and x = 3 when y = 21. what is the value of x when y = 105?
Answers: 1
Mathematics, 21.06.2019 18:40
Which expression gives you the distance between the points (5,1)and(9,-6)
Answers: 2
Mathematics, 21.06.2019 23:30
Line u passes through points (-52, -18) and (-29, 53). line v passes through points (90, 33) and (19, 56). are line u and line v parallel or perpendicular?
Answers: 1
Mathematics, 21.06.2019 23:30
The average daily maximum temperature for lauraβs hometown can be modeled by the function f(x)=4.5sin(Οx/6)+11.8 , where f(x) is the temperature in Β°c and x is the month. x = 0 corresponds to january.what is the average daily maximum temperature in may? round to the nearest tenth of a degree if needed.use 3.14 for Ο .
Answers: 1
According to the american center for disease control, the percentage of cigarette smokers among amer...
Mathematics, 28.01.2020 21:42
English, 28.01.2020 21:42