Probability
It's the probability that you order a Big Mac from Starbucks.
0%
Every value of x must be between these two numbers in a probability distribution.
0 and 1
It's the mean of the standard normal distribution.
0
An example of an unbiased estimator
sample mean, variance, or proportion
It's the probability that you roll two six-sided dice and get a sum of 2.
1/36 or 2.8%
In a binomial distribution, it is the probability of q (or failure) if the probability of success is p=0.7
0.3
It's the probability that a z-score is less than 0.5 in a standard normal distribution.
0.6915 or 69.15%
If simple random samples do not form a normal distribution, it is the smallest number the size of your samples can be for the Central Limit Theorem to apply.
31
Its the probability that (given a standard six-sided die and a standard 52-card deck) you roll a 3 and draw a spade.
1/24 or 4.2%
Find the mean for the following probability distribution situation: The number of tails shown when two coins are flipped.
1
It's the probability that a z-score is in between 0 and 2 in a standard normal distribution.
0.4772 or 47.72%
The average number of pounds of meat that a person consumes per year is 218.4 pounds. Assume that the standard deviation is 25 pounds and the distribution is approximately normal. Find the probability that a person selected at random consumes less than 224 pounds per year.
0.5871 or 58.71%
It's the probability that you draw, without replacement, a pair of 8's from a standard 52-card deck.
1/221 or 0.45%
Find the probability of the following binomial distribution: Getting 20 out of 30 heads when flipping a coin.
2.8%
It's the salary of a baseball player, given the mean salary is 2.5 million with a standard deviation of 250000 and it is normally distributed, if his z-score is 1.75
$2937500
The average number of pounds of meat that a person consumes per year is 218.4 pounds. Assume that the standard deviation is 25 pounds and the distribution is approximately normal. If a sample of 40 individuals is selected, find the probability that the mean of the sample will be less than 224 pounds per year.
0.9222 or 92.22%
It's the probability of getting a full house when dealt 5 cards from a 52-card deck.
1/1082900 or 0.00009%
Find the probability of the following binomial distribution: 18 out of 22 students arriving to class on time with a failure rate of 12%
15.2%
It is the probability of the baseball player's salary being less than $5 million given the mean of $3.25 million and the standard deviation of $500000 is normally distributed
0.9938 or 99.38%
The mean weight of 15-year-old males is 142 pounds, and the standard deviation is 12.3 pounds. If a sample of thirty-six 15-year old males is selected, find the probability that the mean of the sample will be greater than 144.5 pounds. Assume the variable is normally distributed.
0.1112 or 11.12%