Suppose that (X,Y) has a bivariate normal distribution with parameters μ x , μ y , σ x , σ , ρ . a. Show that ( X − μ x σ x , Y − μ y σ y ) has a bivariate normal distribution with parameters 0,1,0,1, ρ . b. What is the joint distribution of ( a X + b , c Y + d ) .
Suppose that (X,Y) has a bivariate normal distribution with parameters μ x , μ y , σ x , σ , ρ . a. Show that ( X − μ x σ x , Y − μ y σ y ) has a bivariate normal distribution with parameters 0,1,0,1, ρ . b. What is the joint distribution of ( a X + b , c Y + d ) .
Solution Summary: The author explains the bivariate normal distribution of the given function. The joint density function mathrmfleft is a random variable.
Suppose that (X,Y) has a bivariate normal distribution with parameters
μ
x
,
μ
y
,
σ
x
,
σ
,
ρ
.
a. Show that
(
X
−
μ
x
σ
x
,
Y
−
μ
y
σ
y
)
has a bivariate normal distribution with parameters 0,1,0,1,
ρ
.
b. What is the joint distribution of
(
a
X
+
b
,
c
Y
+
d
)
.
Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.
Among a student group 54% use Google Chrome, 20% Internet Explorer, 10% Firefox, 5% Mozilla, and the rest use Safari. What is the probability that you need to pick 7 students to find 2 students using Google Chrome? Report answer to 3 decimals.
Samples of rejuvenated mitochondria are mutated (defective) with a probability 0.13. Find the probability that at most one sample is mutated in 10 samples. Report answer to 3 decimal places.
The same final exam of the astronomy course was given to two groups of students. The maximum number of points that a student can score is 100. The first group consisted of a random sample of 10 students who were taught by Professor A. Students from the first group obtained the following results:
87 88 91 88 86 92 81 93 73 99
The second group consisted of a random sample of 9 students who were taught by Professor B. Students from the second group obtained the following results:
74 74 79 97 67 88 86 83 78
Compute the mean squares of between-group variability, MSBET. Round your answer to two decimal places.
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