Answer:
price below 25: 25.2493%
price above 28: 36.9441%
Step-by-step explanation:
median = (min + max) / 2 = (18 + 36) / 2 = 27
standard deviation: in a normal distribution all values are among 6 standard deviaiton: (36 - 18) / 6 = 3
We need to convert the values into a normal distribution of (0;1)
Probability of less than 25:
(X - median) / standard deviation = (25 - 27) / 3 = -0.66667
Now, we look into the normal distribution for this value
P(z< -0.6667) = 0.252492538
Probability of more than 28
1 - probability of less than 28
normalization:
(X - median) / standard deviation = (28 - 27) / 3 = 0.33333
1 - P(z<0.33333)
1 - 0.63055866 = 0.36944134