Question

if the mean is 7.3 and Sd 1.1 what is the proportion below of each? score...

if the mean is 7.3 and Sd 1.1

what is the proportion below of each?

score and z score of each is = 5, -2.09 :

6, -1.18 :

7, -0.27:'

7, -0.27:

7 ,-0.27

8, -0.63

8, -0.63

8, -0.63

8, -0.63

9, -1.54

1b) Using the mean and standard deviation you reported, what Z-score and score would mark the point where there is only .0250 in each tail? ________________________

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

Homework Answers

Answer #1

Let random variable X denote the score

,

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
In each situation below, calculate the standardized score (or z-score) for the value x. (a) Mean...
In each situation below, calculate the standardized score (or z-score) for the value x. (a) Mean μ = 0, standard deviation σ = 1, value x = 1.7. z = (b) Mean μ = 9, standard deviation σ = 4, value x = 5. z = (c) Mean μ = 14, standard deviation σ = 7, value x = 0. z = (d) Mean μ = -15, standard deviation σ = 15, value x = -60. z =
Mark is interested in seeing how outgoing his residents are so he distributes a survey on...
Mark is interested in seeing how outgoing his residents are so he distributes a survey on extraversion to them. Mark is only interested in his own residents and is able to give surveys to all of them, so the data he collects represents a population. x (extraversion score) 10 10 9 8 8 7 5 5 5 4 1) For the population Mark has data from, please calculate the following: a) Mean: b) Sum of Squares: c) Variance: d) Standard...
For items 1-5 (2 pts each), use the following scores to calculate the descriptive statistics below:...
For items 1-5 (2 pts each), use the following scores to calculate the descriptive statistics below: 2, 4, 6, 8, 8, 8 1.   Mean =                                                                        4. Standard deviation = 2.   Mode =                                                                        5. Degrees of Freedom =             3.   Median =                                                                                                                         For items 6-7, use the data from a standardized test (m = 75, s = 10) that measures superhuman power. In addition to calculations, be sure to complete the distribution below by labeling...
Which is better, a score of 90 on a test with a mean of 71 and...
Which is better, a score of 90 on a test with a mean of 71 and a standard deviation of 15, or a score of 688 on a test with a mean of 493 and a standard deviation of 150? Question 5 options: a) none of the above b) a score of 688 c) Both scores have the same position in the distribution. d) a score of 90 Question 6 (1 point) Identify and circle the type of sampling used...
2. In the following questions, assume you have a normal distribution. The average score on a...
2. In the following questions, assume you have a normal distribution. The average score on a mathematics test is 36. The standard deviation is 4. What percentage can be expected to score between 33 and 35? 3. In the following questions, assume you have a normal distribution. The average score on a mathematics test is 36. The standard deviation is 4. What score falls at the 50th percentile? 4. Given, an IQ test with: u= 100 o= 16 What percent...
Mean=2.7 S=1.7 What's the percentile rank o each? Order   Score   Z score 1   1   1 2  ...
Mean=2.7 S=1.7 What's the percentile rank o each? Order   Score   Z score 1   1   1 2   1   1 3   2   -0.41 4   2   -0.41 5   2   -0.41 6   2   -0.41 7   3   0.17 8   3   0.17 9   5   1.35 10   6   1.94 What percent falls between the lowest and highest scores in your table
Part 1 - Compute z Scores Mean = 25 Standard Deviation = 5.2 X z Score...
Part 1 - Compute z Scores Mean = 25 Standard Deviation = 5.2 X z Score Question 1 25 Question 2 16 Question 3 18 Question 4 27 Question 5 31 Question 6 25 Question 7 20 Question 8 35 Question 9 32 Question 10 10 Part 2 - Compute Probability z Score Probability Question 11 -1.5 Question 12 1.5 Question 13 1.9 Question 14 -1.9 Question 15 -1.1 Question 16 1.0 Question 17 0.6 Question 18 2.1 Question 19...
1. The mean score on the ACT test was 21.7 and the standard deviation was 5.2...
1. The mean score on the ACT test was 21.7 and the standard deviation was 5.2 . The distributions of scores was approximately bell-shaped. Compute the z-score for an ACT test score of 17 . Write only a number as your answer. Round your answer to two decimal places (for example: 3.15). 2. A population has mean 25 and standard deviation 17 . What is the data value that has a z-score of 1 ? Write only a number as...
5. Mean of 1500, standard deviation of 300. Estimating the average SAT score, limit the margin...
5. Mean of 1500, standard deviation of 300. Estimating the average SAT score, limit the margin of error to 95% confidence interval to 25 points, how many students to sample? 6. Population proportion is 43%, would like to be 95% confident that your estimate is within 4.5% of the true population proportion. How large of a sample is required? 7. P(z<1.34) (four decimal places) 8. Candidate only wants a 2.5% margin error at a 97.5% confidence level, what size of...
The population IQ score was collected from a national-wide test. The mean population IQ score is...
The population IQ score was collected from a national-wide test. The mean population IQ score is 101 and with a stand deviation of 15. The data of original population follows the normal distribution. Use the Z-score table provided to answer the following questions: (1) What is the Z score for IQ score = 95? Answer:  (Please report your answer to 3 decimal places.) (2) What is the Z score for IQ score = 110? Answer:  (Please report your answer to 3 decimal...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT