Answer:
C. A bag of 15 marbles , with 9 marbles representing female students, has a marble drawn 4 times with replacement
Step-by-step explanation:
i took the test and got it right ;)
Answer:
y=145 and x=55
Step-by-step explanation:
Subtract 180 by 35 for y and 90-35 for x. Hope this helps again. Lol
3rd one ( not 20 characters so ASHWDHWHEIUCNEJEIH)
Answer:
Mark makes more money than Stan.
Step-by-step explanation:
There are about 52 weeks in a year. If you multiply $685 by 52, it will be $36,305.
Answer:
65.45
Step-by-step explanation:
Zscore = (x - mean) / standard deviation
x = score
Percentage below C :
D = 18% ; F = 12%
Sum = 30%
Obtain the Zscore for the proportion below D
P(Z < 0.30) = -0.524
Hence, Zscore = -0.524
Put Zscore = -0.524 in the equation :
-0.524 = (x - 72) / 12.5
-0.524 * 12.5 = x - 72
-6.55 = x - 72
-6.55 + 72 = x
x = 65.45
To receive a grade of C or better, score must be atleast 65.45
