random variable X is normally distributed with mean 70.2 ans standard deviation of 9.2. what is...
A random variable X is normally distributed with a mean of 2 and a standard deviation of 1.4. Calculate the point c such that P ( X ≥ c ) = 0.5.
Assume that the random variable X is normally distributed, with mean and standard deviation Compute the probability P(17 < X < 65).
Assume that the random variable X is normally distributed, with mean is 110 and standard deviation is 10. Compute the probability P(X > 118).
Assume the random variable X is normally distributed with mean as 41 and the standard deviation as 7. Find the 5th percentile.
X is a normally distributed random variable with mean 21 and standard deviation 4. What is the probability that X is between 19 and 23? Write your answer as a decimal rounded to the nearest thousandth. Write 0. in front of your answer
A random variable X is normally distributed with mean 100 and standard deviation 7. What is the 67th percentile of the distribution of X? (PLEASE Use the empirical rule.) (a) 103.08 (b) 121.56 (c) .44 (d) 13.08 (e) 51.00
X is a normally distributed random variable with a mean of 7.0 and a standard deviation of 3.00. Find the value x such that P(X < x) is equal to 0.86. (Note: the diagram is not necessarily to scale.) 10.24 11.63 7.00 8.14
6.33 Let x be a continuous random variable that is normally distributed with a mean of 25 and a standard deviation of 6. Find the probability that x assumes a value a. between 28 and 34 b. between 20 and 35 6.34 Let x be a continuous random variable that has a normal distribution with a mean of 30 and a stan- dard deviation of 2. Find the probability that x assumes a value a. between 29 and 35 b....
Assume the random variable x is normally distributed with mean y = 50 and standard deviation o=7. Find the indicated probability P(x > 40) P(x >40) - (Round to four decimal places as needed.) Assume the random variable x is normally distributed with mean = 88 and standard deviation o = 4. Find the indicated probability P(76<x<85) P(76<x<85)= (Round to four decimal places as needed.) Assume a member is selected at random from the population represented by the graph. Find...
Suppose X is a normally distributed random variable with mean 67 and standard deviation 13. Then P ( 47 ≤ X ≤ 84 ) is roughly