Question

Determine which normal distribution has the smallest standard deviation

Answer #1

A normal distribution has a mean of 21.51 and standard deviation
of 2.1. Determine the value below which 18.41 percent of the
observations will occur.
Use the following probability distribution function for the next
two questions.
x P(x)
0 0.20
3 0.41
4 0.39
What is the expected value of x?
What is the variance of x?

=1:The standard normal distribution has a standard deviation equal
to 1

One normal distribution has a mean of 5 and a standard deviation
of 2. A second normal distribution has a mean of 6 and a standard
deviation of 1. Which of the following statements is true?
Select one:
a. The dispersions of both distributions are the same.
b. The width of the first distribution is wider than the second
distribution.
c. The central location of the first distribution is higher than
the second distribution.
d. The locations of both distributions...

Which of the following is a characteristic of the
normal distribution?
A. The standard deviation equals to 0.
B. The mean equals to 1
C. The curve Is symmetrical
D. The bell curve is skewed
The normal distribution curve has the property of
being asymptotic; this means that .
A. The area under the curve is not skewed to the left
B. The curve is symmetrical
C. The area under the curve is not skewed to the right
D. The...

Assume that x has a normal distribution with the
specified mean and standard deviation. Find the indicated
probability. (Round your answer to four decimal places.)
? = 4.6; ? = 1.9
P(3 ? x ? 6) =
Assume that x has a normal distribution with the
specified mean and standard deviation. Find the indicated
probability. (Round your answer to four decimal places.)
? = 28; ? = 4.2
P(x ? 30) =
Consider a normal distribution with mean 36 and...

A normal distribution has a mean equal to 48. What is the
standard deviation of this normal distribution if 2.5% of the
proportion under the curve lies to the right of x = 61.72? (Round
your answer to two decimal places.)

A. Assume that x has a normal distribution with the
specified mean and standard deviation. Find the indicated
probability. (Round your answer to four decimal places.)
? = 6; ? = 2
P(5 ? x ? 8) =
B. Assume that x has a normal distribution with the
specified mean and standard deviation. Find the indicated
probability. (Round your answer to four decimal places.)
? = 13.8; ? = 3.1
P(8 ? x ? 12) =
C.Assume that x has...

a. Assume that x has a normal distribution with the
specified mean and standard deviation. Find the indicated
probability. (Round your answer to four decimal places.)
? = 4.8; ? = 1.5
P(3 ? x ? 6) =
b. Assume that x has a normal distribution with the
specified mean and standard deviation. Find the indicated
probability. (Round your answer to four decimal places.)
? = 41; ? = 15
P(50 ? x ? 70) =
c. Assume that x...

a. Assume that x has a normal distribution with the
specified mean and standard deviation. Find the indicated
probability. (Round your answer to four decimal places.)
μ = 15.5; σ = 4.5 P(10 ≤ x ≤
26) =
b. Now, assume that x has a normal distribution with
the specified mean and standard deviation. Find the indicated
probability. (Round your answer to four decimal places.)
μ = 14.2; σ = 2.9 P(8 ≤
x ≤ 12) =
c. Now, assume...

a.) Assume that x has a normal distribution with the
specified mean and standard deviation. Find the indicated
probability. (Round your answer to four decimal places.)
μ = 4.4; σ = 2.2
P(3 ≤ x ≤ 6) =
b.) Consider a normal distribution with mean 34 and standard
deviation 2. What is the probability a value selected at random
from this distribution is greater than 34? (Round your answer to
two decimal places.)
c.) Assume that x has a normal...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 36 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago