Question
In: Statistics and Probability
One graph in the figure represents a normal distribution with mean mu equals 12μ=12 and standard...
| One graph in the figure represents a normal distribution with
mean
mu equals 12μ=12 and standard deviationsigma equals 3σ=3. The other graph represents a normal distribution with meanmu equals 8μ=8 and standard deviationsigma equals 3σ=3. Determine which graph is which and explain how you know. |
Solutions
orchestra answered 2 years agoRelated Solutions
Write mu for the mean of a Normal distribution. The value of the standard deviation is...
Write mu for the mean of a Normal distribution. The value of the
standard deviation is unknown. We want to test H0: mu = 8 vs H1: mu
> 8. A random sample of 15 observations is taken from this
distribution, and the sample mean (x-bar) and sample standard
deviation (s) are calculated. Then t = (x-bar -
8)/[s/square_root(15)] is calculated, and is found to equal = 1.85.
At what levels of significance could we reject H0
Derive the variance of a normal distribution with mean Mu and standard deviation Sigma.
Derive the variance of a normal distribution with mean Mu and
standard deviation Sigma.
Given a normal distribution with mu equals 100 and sigma equals 10, complete parts? (a) through?...
Given a normal distribution with mu equals 100 and sigma equals
10, complete parts? (a) through? (d). a. What is the probability
that Upper X greater than 85 ?? The probability that Upper X
greater than 85 is 0.9332 . ?(Round to four decimal places as?
needed.) b. What is the probability that Upper X less than 95 ??
The probability that Upper X less than 95 is 0.3085 . ?(Round to
four decimal places as? needed.) c. What is...
Given a normal distribution with mu equals 100 and sigma equals 10 comma complete parts (a)...
Given a normal distribution with mu equals 100 and sigma equals
10 comma complete parts (a) through (d). LOADING... Click here to
view page 1 of the cumulative standardized normal distribution
table. LOADING... Click here to view page 2 of the cumulative
standardized normal distribution table. a. What is the probability
that Upper X greater than 70? The probability that Upper X greater
than 70 is .0016 nothing. (Round to four decimal places as
needed.) b. What is the probability...
Given a normal distribution with mu equals 100 and sigma equals 10 comma complete parts (a)...
Given a normal distribution with mu equals 100 and sigma equals
10 comma complete parts (a) through (d). cumulative standardized
normal distribution table.
a. What is the probability that Upper X greater than 80?
The probability that Upper X greater than 80 is . (Round to
four decimal places as needed.)
b. What is the probability that Upper X less than 95?
The probability that Upper X less than 95 is . (Round to four
decimal places as needed.)
c....
Giving a normal distribution with mean mu=40 and standard deviation sigma = 10 where the probability...
Giving a normal distribution with mean mu=40 and standard
deviation sigma = 10 where the probability that x0<x<x1 =
0.9. What is the Total Area to the left for x1.
Giving a normal distribution with mean mu= 40 and standard deviation sigma=10 where the probability that...
Giving a normal distribution with mean mu= 40 and standard
deviation sigma=10 where the probability that x0<x<x1 = 0.9.
What is the value of x0
Find the area of the shaded region. The graph depicts the standard normal distribution with mean...
Find the area of the shaded region. The graph depicts the
standard normal distribution with mean 0 and standard deviation 1.
Click to view page 1 of the table. LOADING... Click to view page 2
of the table. LOADING... z equals 0.93 A graph with a bell-shaped
curve, divided into 2 regions by a line from top to bottom on the
right side. The region left of the line is shaded. The z-axis below
the line is labeled "z=0.93".
12. A standard IQ test has a normal distribution with a mean of 100 with a...
12. A standard IQ test has a normal distribution with a mean of
100 with a standard deviation of 15.
a) A score of 145 or higher on this exam is categorized in the
gifted realm. What percent of people would be considered gifted?
___________
b) The people who score in the lowest 5% of the standard IQ test
are considered to have “mental retardation”. What cutoff score is
used to qualify for this benchmark? ___________
Given a normal distribution with a mean of 120 and a standard deviation of 12, what...
Given a normal distribution with a mean of 120 and a
standard deviation of 12, what percentage of values is within the
interval 96 to 144?
1. 32%
2. 50%
3. 95%
4. 68%
5. 99.7%
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