Assume the random variable X is normally distributed with mean
=50 and standard deviation =7. Find the 77 th percentile.
The mean incubation time of fertilized eggs is 2020 days.
Suppose the incubation times are approximately normally distributed
with a standard deviation of 11 day.
(a) Determine the 15th percentile for incubation times.
(b) Determine the incubation times that make up the middle
95%.
A random variable is normally distributed with a mean of 24 and
a standard deviation of 6. If an observation is randomly selected
from the distribution,
a. What value will be exceeded 5% of the time?
b. What value will be exceeded 90% of the time?
c. Determine two values of which the smaller has 20% of the
values below it and the larger has 20% of the values above it.
d. What value will 10% of the observations be...
Assume that the random variable x is normally
distributed with mean μ = 70 and standard deviation
σ = 10. Find P(x < 82)
a. 0.9942
b. 0.4500
c. 0.1151
d. 0.8849
The variable x is normally distributed with a mean of 500 and a
standard deviation of 50. Find a) The 60th percentile. b)The 35th
percentile. c)The x value which exceeds 80% of all x values. d)The
x value that is exceeded by 80% of all x values.
Assume that X is normally distributed with a mean of 5 and a
standard deviation of 4. Determine the value for x
P(-x < X-5 < x) = 0.99
Can someone please explain in detail how to solve it with the
help of the Cumulative Normal Distribution Table?
Thanks!