6. a normal distribution has a mean of 65 and an SD of 20. For each of the following samples,compute the z score for the sample mean and determine whether the mean is typical or extreme.(calculate a Z STATISTIC)Ia. M=74 for a sample of 4 scoresB.M=74 for a sample of 25 scores8:F2*3#ED80F3C544RFaV%5F5TG6BMacBook AirYH87&FEB27 NUN008JDIIM(9

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Answered: 6. a normal distribution has a mean of…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

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4. Which proportion of a normal distribution is located between the mean and z = +1.40? 5. A vertical line drawn through a normal distribution at z = +2.11 separates the distribution into two sections, the body and the tail. Which proportion of the distribution is in the tail?
The scores on a standardized mathematics test for 8th-grade children in New York State form a normal distribution with a mean of m= 70 and a SD=10. a. What proportion of the students in the state have scores less than X=75? b. If samples of n=4 are selected from the population, what proportion of the samples will have means less than M=75? c. If samples of n=25 are selected from the population, what proportion of the samples will have means less than M=75?
Which of the following is NOT a requirement of testing a claim about the mean of the differences from dependent samples? Choose the correct answer below. O A. The degrees of freedom aren- 2. O B. The samples are simple random samples. O C. The sample data are dependent. O D. Either the number of pairs of sample data is larger than 30 or the pairs have differences that are from a population having a distribution that is approximately normal, or both.
For each of the following z-scores, sketch a normal distribution and draw a vertical line at the location of the z-score. Then, determine whether the body is to the right or the left of the z-score and find the proportion of the distribution located in the body. 7.2 z = 0.75 z = -0.67 а. z = -0.33 b. С. z = 1.96 d.
I need help with #15
B. PROBLEM SOLVING: Determine the z-value for each of the following x values for a normal distribution with u = 17 and o = 4. 6. x = 46 7. x = 7 8. x = 3 9. x = 17 10. x = 30 1. x = 13 2. x = 9 3. х%3D 23 4. x = 26 5. x = 18 DTECHNOLOGE AND PHILIP
Image has all the data
The scores of the Betropolis University Music Appreciation Exam are Normally Distributed with a mean of 50 and a standard deviation of 10; that is N(50, 10). A. Boris scored 40.6 and Bela scored 56.8. Find the percent of students who scored greater than Boris and less than Bela. Your answer should be correct to 4 places after the decimal point. ___________ B. 51% of the students score greater than Bernie. Find Bernie’s score. Your answer should be correct to 3 places after the decimal point. Bernie’s score was ___________
After 4 points are added to every score in a distribution, the mean is calculated and found to be μ = 26. What was the value of the mean for the original distribution? A. 30 B. Cannot be determined from the information given C. 34 D. 22

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6. a normal distribution has a mean of 65 and an SD of 20. For each of the following samples, compute the z score for the sample mean and determine whether the mean is typical or extreme. (calculate a Z STATISTIC) I a. M=74 for a sample of 4 scores B.M=74 for a sample of 25 scores