Question

A sample has a mean of M =75 and a standard deviation of s = 15...

A sample has a mean of M =75 and a standard deviation of s = 15 . Find the z-score for each of the following X values. X = 80 X = 70 X = 53 X = 65 X = 75 X = 62 Find the X value for each of the following z-scores. z = -1.40 z = 0.35 z = -1.65 z = 1.25 z = -1.65 z = 2.10

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

The z scores for all the X scores are computed here as:

Now the X scores for the given z scores here are computed as:


0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A sample has a mean of M =90 and a standard deviation of s = 20...
A sample has a mean of M =90 and a standard deviation of s = 20 . Find the z-score for each of the following X values. X = 95 X = 98 X = 105 X = 80 X = 88 X = 76 Find the X value for each of the following z-scores. z = -1.00 z = 0.50 z = -1.50 z = 0.75 z = -1.25 z = 2.60
6.A population has a mean of μ = 60 and a standard deviation of σ =...
6.A population has a mean of μ = 60 and a standard deviation of σ = 12. a.For the population, find the z-score for each of the following X values. X = 69: z =_____X = 84: z =_____X = 63: z =_____ X = 54: z =_____X = 48: z =_____X = 45: z =_____ b.For the same population, find the score (X value) that corresponds to each of the following z-scores. z = 0.50: X=_____ z = 1.50:...
For a population with a mean of u = 100 and a standard deviation of o...
For a population with a mean of u = 100 and a standard deviation of o = 20 a. Find the z-score for each of the following X values. X = 108 X = 115 X = 130 X = 90 X = 88 X = 95 b. Find the score ( X value) that corresponds to each of the following z-scores. z = -0.40 z = -0.50 z = 1.80 z = 0.75 z = 1.50 z = -1.25
Scores on exam 2 for statistics are normally distributed with mean 70 and standard deviation 15....
Scores on exam 2 for statistics are normally distributed with mean 70 and standard deviation 15. a. Find a, if P(x>a)= 0.9595 b.What is the probability that a randomly selected score is above 65?
1) For a sample mean of 70 and a standard deviation of 6 under a normal...
1) For a sample mean of 70 and a standard deviation of 6 under a normal distribution, find: a) The % of data values below 72 b) The % of data values between 65 and 75 c) The % of data values above 80
IQ scores are normally distributed with a mean of 100 and a standard deviation of 15....
IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. Give the z-score of each of the following IQ's and categorize each of as high significant, low significant or not significant. a) 62 b)101 c) 135
A population has a mean of 75 and a standard deviation of 32. Suppose a random...
A population has a mean of 75 and a standard deviation of 32. Suppose a random sample size of 80 will be taken. 1. What are the expected value and the standard deviation of the sample mean x ̅? 2. Describe the probability distribution to x ̅. Draw a graph of this probability distribution of x ̅ with its mean and standard deviation. 3. What is the probability that the sample mean is greater than 85? What is the probability...
True or False: a.) Variance is the mean of the squared deviation score. b.) For any...
True or False: a.) Variance is the mean of the squared deviation score. b.) For any population, a z-score of +1.00 corresponds to a location above the mean by one standard deviation. c.) In a distribution with s=8, a score of X=64 corresponds to z=-.50. The mean for this sample will be M=60. d.) Transforming X values into z-scores will not change the shape of the distribution. e.) One advantage of transforming X values into z-scores is that the transformation...
A distribution with a mean of µ = 73 and a standard deviation of σ =...
A distribution with a mean of µ = 73 and a standard deviation of σ = 8 is being transformed into a standardized distribution of µ = 100 and σ = 16. Find the new, standardized score for each of the following values from the original population (plot each point on a graph): a. X = 80 b. X = 70 c. X = 65 d. X = 87
Assume that statistics scores that are normally distributed with a mean 75 and a standard deviation...
Assume that statistics scores that are normally distributed with a mean 75 and a standard deviation of 4.8 (a) Find the probability that a randomly selected student has a score greater than 72. (b) Find the probability that a randomly selected student has a score between 70 and 80. (c) Find the statistics score separating the bottom 99.5% from the top 0.5%. (d) Find the statistics score separating the top 64.8% from the others.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT