Question

A population is 50 and the sample is 10. If each score is multiplied by 2, what will the new standard deviation be?

Sample = standard devation

Answer #1

9. A set of scores has a mean of 20. If each score is multiplied
by 10, what will happen to the mean?
A) The mean will not change
B) It will be equal to the original mean multiplied by 10
C) It will be equal to the original mean multiplied 2
D) Cannot be determined from the information given
12. A population of N = 15 has a mean of μ = 25. After one score
is removed from...

For the following sample of n =8 scores: 0, 1, 1/2, 0, 3, 1/2 ,
0, 1
a. Simplify the arithmetic by first multiplying each
score by 2 to obtain a new sample. Then, compute
the mean and standard deviation for the new
sample.
b. Starting with the values you obtained in part a,
make the correction for having multiplied by 2 to
obtain the values for the mean and standard deviation
for the original sample

What is the new deviation score (distance from the sample mean
or estimated population mean) for the specification upper limit and
lower limit, respectively? Then divide the deviation scores in Q2
by the estimated population standard deviation to standardize these
scores (gives a Z score).
54
58
57
56
56
55
54
55
57
56
57
55
56
56
55
56
57
54
57
55

A person must score in the upper 2% of the population on an IQ
test to qualify for membership in Mensa, the international high-IQ
society. If IQ scores are normally distributed with a mean of 100
and a standard deviation of 10, what score must a person have to
qualify for Mensa?

A population has a mean of 50 and a standard deviation of 10. If
a random sample of 36 is taken, what is the probability that the
sample mean is each of the following? a. Greater than 53 b. Less
than 52 c. Less than 48 d. Between 46.5 and 53.5 e. Between 50.5
and 51.6

To
calculate z score , you have to know the raw score , population
mean , and standard deviation. Of the following what matches with
the three ; Sample proportion , Sample size , wnd Popularion
proportion .

A sample of size N >30 will be taken from a population with
mean -2 and standard deviation 2. The probability that the sample
average will be less than -1.67 is 0.9066.
What is N? (Use 2 digits after the decimal point for the
z-score).
The z-score of -1.67 is _______, and N = __________

Question #8: The score of the LSAT examination have a population
mean µ = 70 and population standard deviation σ = 10. Answer the
questions below and show work.
1.) A random sample of 64 individuals is taken. What is the
probability that the sample mean is below 71?
2.) A random sample of 100 individuals is taken. What is the
probability that the sample mean is below 71?

The overall average score on a test of Emotional Intelligence is
50 for the general population. A member of the
admissions committee for the Ph.D. program in clinical psychology
at OU wants to know whether applicants to the program are higher in
Emotional Intelligence than the general
population. Twenty-five applicants were randomly
selected from the applicant pool and were given the Emotional
Intelligence test. The applicants’ mean score was 60
with a standard deviation of 10. Use an alpha level
equal to 0.01 to...

A population consists of the following N=3 scores: 0,4,12. a.
Compute µ and σ for the population. b. Find the z-score for each
score in the population. c. Transform the original population into
a new population of N = 5 scores with a mean of µ = 50 and a
standard deviation of σ = 10?

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 18 minutes ago

asked 37 minutes 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 3 hours ago

asked 3 hours ago

asked 4 hours ago

asked 4 hours ago