Standard Normal Probability Distribution MCQ (Multiple Choice Questions) PDF Download

The formula to calculate standardized normal random variable is

1. x - μ ⁄ σ
2. x + μ ⁄ σ
3. x - σ ⁄ μ
4. x + σ ⁄ μ

The formula in which the binomial distribution approaches normal probability distribution with the help of normal variable is written as

1. x - qn divided by square root of pq
2. x - np divided by square root of npq
3. x + np divided by square root of np
4. x - pq divided by square root of npq

Consider the probability distribution as standard normal, if the value of μ is 75, the value of x is 120 with the unknown standard deviation of distribution then the value of z-statistic

1. will be one
2. will be zero
3. will be negative
4. will be positive

If the value of x is less than μ of standard normal probability distribution then the

1. z-statistic is negative
2. z-statistic is positive
3. f(x) will be even number
4. f(x) will be prime number

The standard normal probability distribution has mean equal to 40, whereas the value of random variable x is 80 and the z-statistic is equal to 1.8 then the standard deviation of standard normal probability distribution is

1. 120
2. 80
3. 40
4. 20