The mean of the CES-D depression scale is 11.05. The standard deviation is 7.01. If an...
The mean of the CES-D depression scale is 11.05. The standard deviation is 7.01. If an individual scores 21 on the CES-D, what is the corresponding Z score value?
Homework Answers
The random variable Z as 
, where X denotes CES-D depression score
Put X=21, we get the required z score as
Add Answer to:
The mean of the CES-D depression scale is 11.05. The standard
deviation is 7.01. If an...
A distribution of scores has a mean of ?=100 and a standard deviation of ?=10. For...
A distribution of scores has a mean of ?=100 and a standard deviation of ?=10. For an x value of 140, calculate the corresponding z-score.Can you also interpret what the z-score of x means (x=140)?
IQ-scores are standard-score transformed scores having a mean of 100 and a standard deviation of 15;...
IQ-scores are standard-score transformed scores having a mean of 100 and a standard deviation of 15; SAT scores are standard-score transformed scores having a mean of 500 and a standard deviation of 100. In what follows, X refers to a raw score from a distribution with a mean of X and a standard deviation of S, and SAT and IQ refer to the corresponding transform of that score. Solve for the missing value in each of the following: (a) X=-2.5;Xmean=...
6. A normal distribution of has a mean of 20 and a standard deviation of 10....
6. A normal distribution of has a mean of 20 and a standard deviation of 10. Find the z-scores corresponding to each of the following values: (10 points) a) What is the z score for a value of 30? b) What is the z score for a value of 10? c) What is the z score for a value of 15? d) What it P(20<x<30)? e) What is P (x > 10)? ) What is P (x < 15)? g)...
1. The Center for Epidemiologic Studies Depression Scale (CES-D) is a screening questionnaire designed to detect...
1. The Center for Epidemiologic Studies Depression Scale (CES-D) is a screening questionnaire designed to detect depressive symptoms. Suppose it were used in a school situation to screen for depression in adolescents. Of the 1680 students who answered the questions, 126 were determined based on psychiatric interviews to suffer from major depression. Of these 126 true cases, d0 had been positive on the CES-D Of the 1554 students who were not diagnosed with major depression (373)had been po sitive on...
1. For a normally distributed population with a mean of and a standard deviation of a....
1. For a normally distributed population with a mean of
and a standard deviation of
a. Draw the bell curve going out three standard deviations on
both directions.
b. Find the Z-score for
c. Find the Z-score for
d. Find the Z-score for
e. Find the probability of getting a score greater than 21,
f. Find the probability of getting a score less than 9,
g. Find the probability of getting a score between 13...
1) a normal distribution has a mean of 84 and standard deviation of 6 . find...
1) a normal distribution has a mean of 84 and standard deviation of 6 . find the z score corresponding to an x value of 76 2) a normal distribution has a mean of 55 and standard deviation of 2.7 . find the z score corresponding to an x value of 62
Scores on a homework are normally distributed with a mean of 78 and a standard deviation of...
Scores on a homework are normally distributed with a mean of 78 and a standard deviation of 14. What is the standard score ( z score) for an homework score of 66 ?
Scores on the SAT mathematics section have a normal distribution with mean 4-500 and standard deviation...
Scores on the SAT mathematics section have a normal distribution with mean 4-500 and standard deviation o=100. a. What proportion of students score above a 550 on the SAT mathematics section? Round your answer to 4 decimal places. b. Suppose that you choose a simple random sample of 16 students who took the SAT mathematics section and find the sample mean x of their scores. Which of the following best describes what you would expect? The sample mean will be...
1. A normal distribution of scores has a standard deviation of 10. Find the z-scores corresponding to...
1. A normal distribution of scores has a standard deviation of 10. Find the z-scores corresponding to each of the following values: a. A score that is 20 points above the mean. b. A score that is 10 points below the mean. c. A score that is 15 points above the mean. d. A score that is 30 points below the mean.
Suppose that student’s z score is 3.00 what does this mean? discuss in terms of units of standard deviation It means the value defined by z-score is 3 standard deviations away from the mean value...
Suppose that student’s z score is 3.00 what does this mean? discuss in terms of units of standard deviation It means the value defined by z-score is 3 standard deviations away from the mean value. Discuss in terms of its percentile score. In terms of percentile score, its mean amount of data lies below the value. Z=3 represent the 99.87 the percentile. 4. How does this student’s z score differ from another student whose z score is -3.00 5. If...
6. A normal distribution of has a mean of 20 and a standard deviation of 10. Find the z-scores corresponding to each of the following values: (10 points) a) What is the z score for a value of 30? b) What is the z score for a value of 10? c) What is the z score for a value of 15? d) What it P(20<x<30)? e) What is P (x > 10)? ) What is P (x < 15)? g)...
1. The Center for Epidemiologic Studies Depression Scale (CES-D) is a screening questionnaire designed to detect depressive symptoms. Suppose it were used in a school situation to screen for depression in adolescents. Of the 1680 students who answered the questions, 126 were determined based on psychiatric interviews to suffer from major depression. Of these 126 true cases, d0 had been positive on the CES-D Of the 1554 students who were not diagnosed with major depression (373)had been po sitive on...
1. For a normally distributed population with a mean of
and a standard deviation of
a. Draw the bell curve going out three standard deviations on
both directions.
b. Find the Z-score for
c. Find the Z-score for
d. Find the Z-score for
e. Find the probability of getting a score greater than 21,
f. Find the probability of getting a score less than 9,
g. Find the probability of getting a score between 13...
Scores on the SAT mathematics section have a normal distribution with mean 4-500 and standard deviation o=100. a. What proportion of students score above a 550 on the SAT mathematics section? Round your answer to 4 decimal places. b. Suppose that you choose a simple random sample of 16 students who took the SAT mathematics section and find the sample mean x of their scores. Which of the following best describes what you would expect? The sample mean will be...
Most questions answered within 3 hours.
-
You purchase your daily coffee at the Chemist’s Coffeehouse and
have a choice of two cups:...
asked 10 minutes ago -
Problem 16-51 Sales
Activity Variance (LO 16-3)Odessa, Inc., reports the following
information concerning operations for the...
asked 35 minutes ago -
Pictured on the right are thee point charges Q1 = 18.4 μC, Q2 =
-30.6 μC,...
asked 37 minutes ago -
A graduate student is conducting research in psychology and
needs to obtain the IQ scores of...
asked 1 hour ago -
R2.84: There are 2 defective products in a production lot of 10.
An inspector randomly selected...
asked 2 hours ago -
Consider the following equilibrium system: COCl2(g) CO(g) +
Cl2(g) A 10.00 L evacuated flask is filled...
asked 3 hours ago -
1) What are the two distinct steps that one needs to perform
when developing a data...
asked 3 hours ago -
2) Write a C++ program that uses a class called “Degree” to
obtain the trigonometric
values...
asked 4 hours ago -
1. In eukaryotic cells the genomes of
&
asked 4 hours ago -
The standard enthalpy of propanol (C3H7OH) is -303.0 kJ/mol.
Compute both of the
gross and net...
asked 4 hours ago -
Why PWM using H-bridge for control motor speed is more power
effiecient than the linear amplifier...
asked 4 hours ago -
In 1999, Carly Fiorina famously said,"I hope that we are at a
point that everyone is...
asked 4 hours ago