Question

Assume that X is normally distributed with mean of 70 and variance of 9, then compute

P(60< X < 75)

Answer #1

Assume that X is normally distributed with mean of 70 and
variance of 9, then compute
P(60<X<75)

Assume X is normally distributed with a mean of 20 and a
variance of 16. find the following using the Z tables.
a.) P(x<15)
b.) P(x>10)
c. P (X>x)=0.95
D.) P (3<X<x)=.90

assume that the random variable x is normally distributed, with
mean=90 and standard deviation=12. compute the probability
p(57<x<107).

Suppose X is a normally distributed random variable with mean μ
= 10 and variance σ2 = 4. Find P(9 < X < 12).

Assume that the random variable X is normally distributed, with
mean =59 and standard deviation of 10 compute the probability
P(56<X ≤ 68)

A random variable X is normally distributed with a mean of 121
and a variance of 121, and a random variable Y is normally
distributed with a mean of 150 and a variance of 225. the random
variables have a correlation coefficient equal to 0.6. Find the
mean and variance of the random variable :
W= 6X + 3Y

Assume that the random variable X is normally distributed, with
mean 80 and standard deviation 15 Compute the probability P(X >
79).

A random variable X is normally distributed with a mean of 100
and a variance of 100, and a random variable Y is normally
distributed with a mean of 180 and a variance of 324. The random
variables have a correlation coefficient equal to −0.4. Find the
mean and variance of the random variable below.W=2X−4Y
μW=
(Type an integer or a decimal.)
σ2W=
(Type an integer or a decimal.)

Assume that the random variable X is normally distributed, with
mean ?=850 and standard deviation ?=20.
Compute the probabiliy P(750<X < 800).
0.0587
0.9913
0.0079
0.0061

.x is normally distributed with a mean of 27 and a standard
deviation of 9. Take a random sample of n = 9 observations and
imagine that you have calculated a sample mean Xbar. What is the
P(Xbar < 33) )?
What is the population mean , sd value and Z score ?
.x is normally distributed with a mean of 27 and a standard
deviation of Take a random sample of n = 9 observations and imagine
that you...

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