Grade 11 and 12 Mathematics (Moderator: geoffrey)

The middle 0.90 of the standard normal distribution is bounded by -1.96 and 1.96 . Indicate ...

Started by deesands

If the random variable z is the standard normal distribution, then z(0.75) is equal to a. P25 for ...

Started by Bernana

The value of z(0.70) z(0.30) is a. 1.04. b. -1.04. c. 0.52. d. ...

Started by ghost!

The mean of a normal probability distribution is 500 and the standard deviation is 10 . About 68 of ...

Started by jwb375

Find the value of z(0.73) + z(0.27). ...

Started by WWatsford

A traffic study at one point on an interstate highway shows that vehicle speeds are normally ...

Started by Melani1276

Scores on a computer science aptitude test are normally distributed. The standard deviation of the ...

Started by fahad

The times required to assemble a product part are normally distributed with a mean of 47.5 minutes ...

Started by casperchen82

Scores on a particular test are normally distributed with a mean of 126 points. Find the standard ...

Started by rlane42

Use the standard normal table to find the values of z: z(0.7881). ...

Started by cmoore54

A piece of data picked at random from a normally distributed population. Find the probability that ...

Started by EAugust

Assume that x is a normally distributed random variable with a mean of 70 and a standard deviation ...

Started by geodog55

For a particular age group of adult females, the distribution of cholesterol readings, in mg/dl, is ...

Started by stevenposner

The waiting time x at a fast-food restaurant during lunch time is approximately normally distributed ...

Started by karen

The length of life of a certain type of washer is approximately normally distributed with a mean of ...

Started by cdr_15

The grades of an examination whose mean is 82 and whose standard deviation is 14 are normally ...

Started by go.lag

Assume that x is normally distributed random variable with a mean of 30 and a standard deviation of ...

Started by go.lag

Suppose that daycare costs are normally distributed with a mean equal to 10,000 a year and a ...

Started by bclement10

For a binomial distribution with a fixed value of p, the binomial distribution begins to look like a ...

Started by Collmarie

Every binomial distribution may be approximated reasonably by an appropriate normal distribution. ...

Started by kamilo84

Probabilities associated with a binomial distribution can be reasonably estimated by using the ...

Started by renzo156

The binomial random variable is discrete, whereas the normal random variable is continuous. ...

Started by anjilletteb

Consider the binomial random variable x with n = 50 and p = 0.5 . Suppose we want to use a normal ...

Started by saliriagwu

In a southern state, 5 of all individuals who drive automobiles are not properly licensed. Use the ...

Started by genevieve1028

If 15 of the population is left-handed, find the probability that in a class of 35 students that 3 ...

Started by wrbasek0