P = 0.11
1-p = .89
n = 200
mean = n*p = 22
std dev = n*sqrt(p(1-p)/n) = 4.425
find z values for standard normal distribution
Z= (30-22)/4.425 = 1/808
look up table to find P(Z less than 1.808) which is same P(x less than 30)
for 2nd part, you need 2 Z values
Z1 = (25-22) / 4.425 = 0.678
Z2 = (15-22) / 4.425 = -1.58
P(-1.58 less than Z less than 0.678) = P(Z less than .678) - P(Z less than - 1.58)
Answer:
32/139
Step-by-step explanation:
There are a total of 42 + 45 + 20 + 32, or 139, candies in the bag.
The probability that the picked candy is purple is therefore
32
---------
139
This result cannot be simplified.
Answer:
The rectangle has rotational symmetry of order = 2
The rectangle's rotational symmetry occurs for angles of 90 degrees.
