Mathematics, 17.07.2019 06:10, Byanka032801
The random variable x represents the number of boys in a family with three children. assuming that births of boys and girls are equally likely, find the mean and standard deviation for the random variable x.
a) mean: 1.50; standard deviation: .87
b) mean: 2.25; standard deviation: .76
c) mean: 2.25; standard deviation: .87
d) mean: 1.50; standard deviation: .76
Answers: 3
Mathematics, 21.06.2019 19:30, Jenan25
Consider this equation. |y + 6| = 2 what can be concluded of the equation? check all that apply. there will be one solution. there will be two solutions. the solution to β(y + 6) = 2 will be also be a solution to the given absolute value equation. the solution(s) will be the number(s) on the number line 2 units away from β6. the value of y must be positive since the variable is inside absolute value signs.
Answers: 1
Mathematics, 21.06.2019 21:40, dededese2403
Astudy was interested in determining if eating milk chocolate lowered someone's cholesterol levels. ten people's cholesterol was measured. then, each of these individuals were told to eat 100g of milk chocolate every day and to eat as they normally did. after two weeks, their cholesterol levels were measured again. is there evidence to support that their cholesterol levels went down? how should we write the alternative hypothesis? (mud = the population mean difference= before - after)a. ha: mud = 0b. ha: mud > 0c. ha: mud < 0d. ha: mud does not equal 0
Answers: 1
The random variable x represents the number of boys in a family with three children. assuming that b...
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