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Z-scores
Page 2
Questions (190)
us e the formula z=x-u/SD to determine the z score for a score of 34.5 a normal distribution if the mean is 46.5 and the
1 answer
asked by
jay
457 views
In a class of 34 students, how many of them will have a z-score above 1.0?
1 answer
asked by
Shawna
378 views
Question 5 of 10 A z-score of 2.0 is two standard deviations above the mean of the distribution (t).
True False I chose answer A
4 answers
asked by
pls check
1,449 views
In a sample of students, the average score on an assessment was 65. This individual obtained a z score of 0. What test score did
4 answers
asked by
Shay
595 views
What is the sample Z score to reject the null hypothesis if the cut off Z score +-2.31?
1 answer
asked by
Keith
383 views
The whole class averaged 12 on their assignments with astandard deviation of 3. If Jade averaged 6, then her z- score was
3 answers
asked by
Bec
979 views
Consider a normal population with ì = 49 and ó = 6. Calculate the z-score for an x of 44.2 from a sample of size 22. (Give
1 answer
asked by
Sue 74
340 views
Consider a normal population with ì = 49 and ó = 6. Calculate the z-score for an x of 44.2 from a sample of size 22. (Give
1 answer
asked by
Sue 74
1,008 views
Consider the following (Give your answer correct to four decimal places.)
(c) Find P(z > 0.23). 1-0.5910 = .409 (d) Find P(z <
4 answers
asked by
Tom66
363 views
On a math test a student where the mean is 50 and the standard deviation is 12, a student has a z-score of 0.83. What did the
1 answer
asked by
Stacey
339 views
Use this z-score formula for this problem:
z = (x - mean)/(sd/√n) x = 1.25, 1.50 mean = 1.35 sd = 0.25 n = 40 Calculate two
4 answers
asked by
Christina Ms Sue please help
421 views
1)A runner's finishing time translated into a z-score of z=2.6
Explain in words whether the runner performed excellently or
1 answer
asked by
Katy
337 views
A given distribution has a mean of 60. A score of 75 had a corresponding z of +2.00. The standard deviation is
1 answer
asked by
Mariah
350 views
Assuming that the data are normally distributed with a mean of 45 and a standard deviation of 3.25, what is the z-score for a
1 answer
asked by
ann
297 views
A random sample of n = 9 scores is obtained from a population with μ = 50 and σ = 9. If the sample mean is M = 59, what is the
2 answers
asked by
Samantha
555 views
what is the z-score for a raw score if 89?
1 answer
asked by
dee
241 views
Suppose that your score on an exam has a positive z-score in comparison to your classmates. A. Is it possible that your score is
2 answers
asked by
Rok
1,033 views
A distribution has a standard deviation of _ _ 12. Find the z-score for each of the following locations in the distribution.
a.
2 answers
asked by
Sharon
534 views
I scored an 85 percent on my exam. The mean score for that quiz was -83.73 and standard deviation was -24.23 what is the z score
3 answers
asked by
Anonymous
432 views
4.Suppose you administered an anxiety test to a large sample of people and obtained normally distributed scores with a mean of
4 answers
asked by
shirley
1,389 views
A distribution has a standard deviation of ó = 9.5. Find the z-score for a score above the mean by 4 points. note: round to 2
2 answers
asked by
Emilia
726 views
A Math test has a mean of 51 and standard deviation of 5.0. Find the corresponding z scores for:
I. a test score of 64 II. a test
5 answers
asked by
Jennifer
522 views
find the z score corrsponding to a score of X = 100
the mean = 80 and the standard devation = 5
1 answer
asked by
karen
350 views
For a population with u=50 and o=8, find the z-score for x=54, x=42, x=62 ,x=48 ,x=52 ,x=34
2 answers
asked by
Dana
1,191 views
a teacher marking an extra credit assignment gave the following marks: 49, 53, 61, 65, 68, 71, 79, 87, 88, 90
what is the z-score
1 answer
asked by
math help!!!!
408 views
If a student had a z score of 2.5 for IQ, whar is his actual IQ? The IQ mean is 100, and standard deviation is 15.
1 answer
asked by
Beverly
412 views
Calculate the z score for an SAT Verbal score of 510, mean of 500, and standard deviation of 100.
2 answers
asked by
Beverly
482 views
Calculate the z score for an ACT score of 12, a mean of 20, and the standard deviation is 5.
1 answer
asked by
Beverly
382 views
If a normal distribution shows that the height of adult women has a mean of 64.5 inches and a standard deviation of 2.5 inches,
3 answers
asked anonymously
43 views
I think I know how to answer the following question IF I assume that the distribution is normal - however, since the question
2 answers
asked by
CJ
492 views
The scores on a mathematics exam have a mean of 65 and a standard deviation of 7. Find the x-value that corresponds to the
3 answers
asked by
Isa
1,504 views
For a distribution
_ _ X = 100 and s=4. If x= X then z=? If x = 90, then z =? If z=2, then x=? If z=1.5, then x =?
3 answers
asked by
Debbie
263 views
Please help, very lost
Eric has computed that it takes an average (mean) of 17 minutes with a standard deviation of 3 minutes to
1 answer
asked by
mary
442 views
Please help, very lost
Eric has computed that it takes an average (mean) of 17 minutes with a standard deviation of 3 minutes to
1 answer
asked by
mary
919 views
What is the signal change of 58 with the distributed mean of 35,standard deviation 10, using .o1 level
1 answer
asked by
JACKSON
369 views
Our students were asked to rate their admiration of Hillary Rodham Clinton on a scale of 1 to 7. They were asked to rate their
1 answer
asked by
sue
884 views
Our students were asked to rate their admiration of Hillary Rodham Clinton on a scale of 1 to 7. They were asked to rate their
2 answers
asked by
Sue
573 views
Maria and Zoe are taking Biology 105 but are in different classes. Maria's class has an average of 78% with a standard deviation
3 answers
asked by
Peter
670 views
John's z-score on a college entrace exam is 1.3. If the raw scores have a mean of 480 and a standard deviation of 70 points,
1 answer
asked by
Joe
494 views
5. Each year, a national achievement test is administered to 3rd graders. The test has a mean score of 100 and a standard
4 answers
asked by
xiomara
2,817 views
2. For a distribution of scores, which of the following Z score values represents the location closest to the mean?
3 answers
asked by
Luah
2,452 views
If a distribution of IQ test scores has a mean of 100 and a standard deviation of 16, what would be the result if we first
3 answers
asked by
Crystal
1,584 views
find the indicated z score. The graph depicts the standard distribution with mean 0 and standard deviation 1.
shaded area is
3 answers
asked by
ashley
1,447 views
The proportion of baby boys born in the United States has historically been 0.512. You choose an SRS of 55 newborn babies and
4 answers
asked by
Ashley
1,395 views
bob received a z score of 0.9 on a college entrance exam. If the raw scores have a mean of 540 and a standard deviation of 80
4 answers
asked by
Sarah
1,289 views
Maria and Zoe are taking Biology 105 but are in different classes. Maria's class has an average of 78% with a standard deviation
7 answers
asked by
Peter
1,137 views
If the score on a test has a mean of 52 and a standard deviation of 5, what is the z-score for a score of 58
2 answers
asked by
Anonymous
1,065 views
The average resting heart rate of a population is 89 beats per minute, with a standard deviation of 13 bpm. Find the z-scores
4 answers
asked by
john
1,098 views
For a population with a mean of µ=60 and standard deviation of Ợ=24, find the z=score corresponding to each of the following
2 answers
asked by
Lyndyc
1,078 views
1. On a measure of anxiety, the mean is 79 and the standard deviation is 12. What are the z-scores for each of the following raw
2 answers
asked by
bertha
1,044 views
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Parent Categories (14)
Data Analysis
Descriptive Statistics
Hypothesis Testing
Inferential Statistics
Measures of Central Tendency
Measures of Central Tendency and Dispersion
Normal Distribution
Population distribution
Probability
Probability and Statistics
Sampling
Scores and Measures
Statistical Analysis
Statistics