Answer:
46.01
Step-by-step explanation:
i.e sum of all the purchases + 7% of the total purchase.
If a variable is binomially distributed with n trials and a success probability of p, then the mean = np, variance = np(1–p) and standard deviation = square root of variance.
In this case, n = 1200, p = 0.35. So, mean = (1200)(0.35) = 420,
variance = (1200)(0.35)(1–0.35) = 273,
standard deviation = square root of variance = √273 = 16.52.
Answer:
B
Step-by-step explanation:
the amount owed is greater than the cost
The rule of product states that:
So, a product is positive if and only if both factors have the same sign, and is negative if only if the factors have opposite sign.
