The mean of a normal probability distribution is 400; the standard deviation is 18. a. About...

Question

Question

Answer 1

Answer #1

papergrid Date: / / papergrid Date: / / Given M 400 & 6 18 @ Foma nommal distribution, 68% of the observations lie between ut

Answer 2

Similar Homework Help Questions

The mean of a normal probability distribution is 500; the standard deviation is 14. a. About...

The mean of a normal probability distribution is 500; the standard deviation is 14. a. About 68% of the observations lie between what two values? Value 1 Value 2 b. About 95% of the observations lie between what two values? value a Value 1 Value 2 c. Practically all of the observations lie between what two values? Value 1 Value 2
The mean of a normal probability distribution is 340; the standard deviation is 12. About 68%...

The mean of a normal probability distribution is 340; the standard deviation is 12. About 68% of the observations lie between what two values? About 95% of the observations lie between what two values? Practically all of the observations lie between what two values?
E 7-9 Connect HW Saved 1 The mean of a normal probability distribution is 380, the...

E 7-9 Connect HW Saved 1 The mean of a normal probability distribution is 380, the standard deviation is 16. a. About 68% of the observations lie between what two values? 10 points Value 1 Value 2 eBook Hint b. About 95% of the observations lie between what two values? Print References Value 1 Value 2 c. Practically all of the observations lie between what two values? Value 1 Value 2 Mc Graw Hil Prev Next 1 of 1

0.In a normal distribution, plus and minus 2 standard deviations from the mean will include about...

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...
16. The mean of a normal probability distribution is 400 pounds. The standard deviation is 10...

16. The mean of a normal probability distribution is 400 pounds. The standard deviation is 10 pounds. a. What is the area between 415 pounds and the mean of 400 pounds? . a. .4332 b. .1915 c. .3085 b" What is the area between the mean and 395 pounds? .с. What is the probability of selecting a value at random and discovering that it has a value of less than 395 pounds?
For the normal distribution, the mean plus and minus one standard deviation will include about what...

For the normal distribution, the mean plus and minus one standard deviation will include about what percent of the observations? a. 34% b. 68% c. 48% d. 95%

Assume that a normal distribution of data has a mean of 20 and a standard deviation...

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?
Assume that a normal distribution of data has a mean of 12 and a standard deviation...

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.
A population's distribution is normal with a mean of 18 and a standard deviation of 4....

A population's distribution is normal with a mean of 18 and a standard deviation of 4. A sample of 20 observations is selected and a sample mean computed. What is the probability that the sample mean is more than 19.5? Express your solution as the decimal equivalent of a probability rounded to four decimal places.

Suppose X has a normal distribution with mean 80 and standard deviation of 10. Between what...

Suppose X has a normal distribution with mean 80 and standard deviation of 10. Between what values of x do 95% of the values lie? a)50 and 110 b)60 and 90 c)60 and 100 d)75 and 85