Four friends, Janice, Barbara, Kathy and Roberta, decided to carpool together to get to school. Each day the driver would be chosen by randomly selecting one of the four names. They carpool to school for 96 days. Use the normal approximation to the
binomial to calculate the following probabilities. Round the standard deviation to four decimal places.
1. Find the probability that Janice is the driver at most 20 days.
2. Find the probability that Roberta is the driver more than 16 days.
3. Find the probability that Barbara drives exactly 24 of those 96 days

x=6 and x=3

beep beep imma sheep

i would say true? if the unit was informational and it "refreshed your understanding", then true.

do it yourself this is easy

step-by-step explanation:

7.9m and 4.3°

step-by-step explanation:

let east be +x and north be +y, x = distance * cos θ, y = distance * sin θ  

for 3.5 south, y = -3.5  

for 8.2, x = 8.2 * cos 30 and y = 8.2 * sin 30  

for 15 west, x = -15  

total x = 8.2 * cos 30 – 15 ≈ -7.9  

total y = -3.5 + 8.2 * sin 30 = 0.6  

magnitude = [(8.2 * cos 30 – 15)^2 + 0.6^2)]^0.5  

the magnitude is approximately 7.9 m  

tan θ = y/x = 0.6/-7.9  

the angle is approximately 4.3˚ north of west