Answer:
0.0274
Step-by-step explanation:
The mean is and the standard deviation is
Calculate
for
If then
and
Use table for normal distribution probabilities to get that
845 miles / 13 hours = 65 miles per hour
65 miles per hour x 11 hours = 715 miles
42 + 28 + 12 + 18 = 100 total beads
probability of not drawing a yellow or a green : (12 + 18) / 100 = 30/100 reduces to 3/10 or 30%
probability of drawing a red or green : (18 + 28) / 100 = 46/100 reduces to
23/50 or 46%