For a normal distribution, the mean plus and minus one standard deviation is an interval that...
0.In a normal distribution, plus and minus 2 standard deviations from the mean will include about what percent of the observations? A) 50% B) 99.7% C) 95% D)68% 21. What is the area under the normal curve between z -0.0 and z-2.0 A) 1.0000 B) 0.7408 C) 0.1359 D) 0.4770 22. Which of the following is NOT a characteristic of the normal probability distribution? A) Positively-skewed B) Bell-shaped C) Symmetrical D) Mean Mode and median are all equal 23. A...
Question 32 In a normal distribution with a mean of 90.00 and a standard deviation of 10, what percentage of the cases lies between scores of 80 and 907 50% 68% 34% 100%
Assume that a normal distribution of data has a mean of 12 and a standard deviation of 3. Use the 68-95-99.7 rule to find the percentage of values that lie below 9.
Assume that a normal distribution of data has a mean of 20 and a standard deviation of 5. Use 68 - 95 - 99.7 rule to find the percentage of values that lie above 15. What is the percentage of values lie above 15?
distribution of values is normal with a mean of 90 and a standard deviation of 25. From this distribution, you are drawing samples of size 12. Find the interval containing the middle-most 68% of sample means:
The distribution of the height of a male gibbon is normal with a mean of 80 centimeters and a standard deviation of 12 centimeters. Using the Standard Deviation Rule, approximately what percentage of gibbons are between and 116 centimeters? A 10% B. 50% C.68% 0.95% E 99.7%
Assume that a normal distribution of data has a mean of 21 and a standard deviation of 6. Use the 68minus−95minus−99.7 rule to find the percentage of values that lie 15. What percentage of values lie belowbelow 15?
A normal distribution with mean equal to zero and a standard deviation equal to one is called the ____________ normal distribution. exponential standard continuous uniform
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.
(1 point) The distribution of heights of adult men in the U.S. is approximately normal with mean 69 inches and standard deviation 2.5 inches Use what you know about a normal distribution and the 68-95-99.7 rule to answer the following NOTE: If your answer is a percent, such as 25 percent, enter: "25 PERCENT" (without the quotes). If your answer is in inches, such as 10 inches, enter: "10 INCHES" (without the quotes and with a space between the number...