Normal Distribution (Standardization)
Given a mean of 20 with a standard deviation of 6 what is the z score for a value of 30?(round to third decimal point)
The Z score is 1.667
Number of traffic fatalities per year in the state of Florida
discrete
If a coin is flipped 3 times. What is the probability of getting exactly 2 heads?
37.5%
Given a mean value of 100 with a standard deviation of 15, what is the z score with a value of 130
X = the number of hours a child watches tiktok on a given day, Classify the random variable.
Continuous
If a pair dice is thrown what is thrown what is the probability that the number is higher than 5.
72.2%
With a mean of 50 and a standard deviation of 10, what is the probability that a person is chosen between 45 and 60.
0.8413−0.3085=0.5328
X = the number of defective toasters in a sample of eight iPads, Give the range of values that the random variable X may assume.
{0, 1, 2, 3, …, 8}
If a coin is flipped 6 times. What is the probability of getting exactly 4 heads?
23.4%