
A normal distribution has M= 23.1 and r = 3.6 . Find the 2-score for x...
1) Given a standard normal distribution, find the probability of having a z score higher than 1.67 ```{r} ``` 2) Given that test scores for a class are normally distributed with a mean of 80 and variance 36, find the probability that a test score is lower than a 45. ```{r} ``` 3) Given a standard normal distribution, find the Z score associated with a probability of .888 ```{r} ``` 4) Find the Z score associated with the 33rd quantile...
1) a normal distribution has a mean of 84 and standard deviation of 6 . find the z score corresponding to an x value of 76 2) a normal distribution has a mean of 55 and standard deviation of 2.7 . find the z score corresponding to an x value of 62
Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Enter a number. Round your answer to four decimal places.) μ = 24; σ = 3.6 P(x ≥ 30) =
Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Enter a number. Round your answer to four decimal places.) μ = 26; σ = 3.6 P(x ≥ 30) =
A normal distribution has a mean of u = 80 with o = 20. What score separates the highest 15% of the distribution from the rest of the scores? (Hint: First find the Z-score, then convert back to a raw score.) OX= 59.2 X = 100.8 X =95 X = 65
QUESTION 1 A normal distribution has a mean of m= 70 with s = 12. If one score is randomly selected from this distribution, what is the probability that the score will be greater than X = 58? ca. 0.8413 cb.0.1577 OC 0.3413 cd.0.6826 QUESTION 2 A normal distribution has a mean of m= 80 with s = 20. What score separates the lowest 30% of the distribution from the rest of the scores? Ca.X 69.6 b. X 50 CCX=...
A normal distribution has mean = 12 and standard deviation = 3. a. The z-score corresponding to x = 18. b. Find the raw score corresponding to z = -1.5.
Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Round your answer to four decimal places.) μ = 28; α = 3.6 P(x ≥ 30) = _______
(a) For a normal distribution, find the Z-score that cuts off the bottom 64.18% of all the z-scores. Round to 2 decimal places after the decimal point. answer: (b) For a normal distribution, find the Z-score that cuts off the top 58.89% of area. Round to 2 decimal places after the decimal point. answer:
1.Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Round your answer to four decimal places.) μ = 101; σ = 16 P(x ≥ 120) = 2.Suppose X ~ N(5, 9). What is the z-score of x = 5? (Enter an exact number as an integer, fraction, or decimal.) z =