In a normal distribution with a mean of 78 and a standard deviation of 7, what is the probability that a score will be between 71 and 85?'
15.87%
31,74%
68.26%
34.13%
In a normal distribution with a mean of 78 and a standard deviation of 7, what...
1.A distribution of values is normal with a mean of 6.3 and a standard deviation of 83.3. Find P57, which is the score separating the bottom 57% from the top 43%. P57 = 2.A distribution of values is normal with a mean of 180.3 and a standard deviation of 20.5. Find P71, which is the score separating the bottom 71% from the top 29%. P71 =
1.6 Question 42 The mean of a normal distribution is 60 with a standard deviation of 5. What is the probability of selecting a score between raw scores of 55 and 68? p- Example Answer Format: 5.52 (remember to use zero as a placeholder when necessary) Question 43 The mean of a normal distribution is 60 with a standard deviation of 5.
A normal distribution has a mean of 80 with a standard deviation of 20. What score separates the highest 40% of the distribution from the rest of the scores? A) X= 54.4 B) X= 85 C) X= 75 D) X= 105.6
Use the normal distribution of IQ scores, which has a mean of 85 and a standard deviation of 18, and the following table with the standard scores and percentiles for a normal distribution to find the indicated quantity. The percentage of scores between 40 and 130 is ______%. Full data set Standard score % Standard score % minus−3.0 0.13 0.1 53.98 minus−2.5 0.62 0.5 69.15 minus−2 2.28 0.9 81.59 minus−1.5 6.68 1 84.13 minus−1 15.87 1.5 93.32 minus−0.9 18.41 2...
A normal distribution has a mean of 137 and a standard deviation of 7. Find the z-score for a data value of 121.
2. What are the parameters (Mean and standard deviation) for a standard normal distribution? 3. Find the critical value for Zoo 4. Find the z score that would give us the area in the right 30% of the standard normal curve. 5. Find the area to the left of z = -0.42. Draw a standard normal curve of the region described. 6. Find the area to the right of z=0.89. Draw a standard normal curve of the region described. 7....
Given a normal distribution, X, with mean, 110, and standard deviation, sigma = 46. A. What is the X value with Z-score equal to z = 0.65? B. What is the probability of X is less than or equal to 146.9? %
Given a normal distribution, X, with mean, 110, and standard deviation, sigma = 46. A. What is the X value with Z-score equal to z = 0.65? B. What is the probability of X is less than or equal to 146.9? %
Given a normal distribution, X, with mean, 150, and standard deviation, sigma = 42. A. What is the X value with Z-score equal to z = 2.77? B. What is the probability of X is less than or equal to 266.3? %
3. A normal distribution of BMCC MATSI scores has a standard deviation of 1.5. Find the z-scores corresponding to each of the following values: a. A score that is 3 points above the mean. b. A score that is 1.5 points below the mean. c. A score that is 2.25 points above the mean 4. Scores on BMCC fall 2017 MATI50.5 department final exam form a normal distribution with a mean of 70 and a standard deviation of 8. What...