Answer:
A) Mean = 135 Variance = 62 Standard Deviation = 8
Step-by-step explanation:
Given that :
Proportion (p) = 54%
Sample size (n) = 250
Using Normal approximation :
Mean = np
Mean = 250 * 0.54 = 135
Variance = npq ; q = 1 - p = 1 - 0.54 = 0.46
Variance = (250 * 0.54 * 0.46) = 62.1 = 62
Standard deviation = √variance = √62.1
Standard deviation = 7.8803553 = 8
50 degrees if it is a right angled triangle
Answer:
170
Step-by-step explanation:
35 x 3cars= 105 13 x 5hours= 65 105+65= $170
Answer:
c. (x+4)(2x)•(x + 4)(3x)
Step-by-step explanation: