If a random variable has the standard normal distribution, find the probability that it assumes a value
(a) Less than 2.00
(b) Less than -1.96
(c) Greater than 2.58
(d) Greater than -2.33
(e) Between 0.00 and 1.00
(f) Between 0.58 and 2.12
(g) Between -1.65 and -0.84
(h) Between -2.42 and 1.86
If a random variable has the standard normal distribution, find the probability that it assumes a...
3. If a random variable has the standard normal distribution, find the probability (draw the region as well) that it will take on a value (a) between -0.55 and 1.58; (b) greater than -2.22
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....
given that z is a standard normal random variable what is the probability that z ≥ -2.12? a. 0.966 b. 0.017 c.4830 0.9830 From a population of 200 elements, a sample of 49 elements is selected. It is determined that the sample mean is 56 and the sample standard deviation is 14. The standard error of the mean is a. 3 b. 2 c. greater than 2 d. less than 2
1. Assuming the Standard Normal Distribution, USING EXCEL find: a. What is the probability of Z < than -1.75? b. What is the probability of Z > than 1.00? c. What is the probability of Z between 1.00 and 2.00? d. 15% of the cumulative probability is above what value for Z? e. 95% of the cumulative probability is below what value for Z? f. What is the probability of Z<-2.00 OR X> 2.00? ...
A random variable follows the normal probability distribution with a mean of 80 and a standard deviation of 20. Determine the probability for a randomly selected value from this population in parts a through d below. a. is less than 90 b. is less than 65 c. is more than 110 d. is more than 40.
A random variable follows the normal probability distribution with a mean of 100 and a standard deviation of 10. Determine the probability for a randomly selected value from this population in parts a through d below. Click here to view page 1 of the standard normal probability table. Click here to view page 2 of the standard normal probability table. a. What is the probability that the value is less than 80? The probability that the value is less than...
help Assume a random variable Z has a standard normal distribution (mean 0 and standard deviation 1). Use all decimal places from the Normal Table. Your final answers to 4 decimal places. a) The probability that Z lies between 1.55 and 1.86 is Select b) What is the value of Z if only 1.5% of all possible Z values are larger? Select]
Given that z is a standard normal random variable, compute the probability that it takes on a value that is: - either greater than 2 or less than -2. - that it takes on a value between -2 and -1. - that it takes on a value between 1 and 2. Answer must be between 0 and 1, round to four decimal places.
A continuous random variable X has a normal distribution with mean 169. The probability that X takes a value greater than 180 is 0.17. Use this information and the symmetry of the density function to find the probability that X takes a value less than 158.
Using the following standard normal density curve, determine what is the probability thata random variable z less than 2.127 A) B) 0.98321 -0.32774 0.3 C) D) -1.6387 39.328 0.2 F) 0.1 E) 0.49160 1.3109 z-2.12 G) None of These