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Does a negative z score yield a negative probability value?
no, z score can be negative but a probability is a always positive between 0 and 1.
Are the probability values always greater than or equal to 0 or less than or equal to 1 or all positive numbers?
Probability values are never negative and are always between 0-1 according to the definition Probability of A= Number of outcomes classified as A/Total number of possible outcomes
Why will a density curve always give a probability of zero?
It will not. For the interval (x, x+dx) it may well give a non-zero probability. With a continuous distribution, the probability of any particular value is always 0. What the probability density function gives is the probability that the variable is NEAR the selected value.
Is probability always true?
There is a chance that it might be.
Should the numbers for the experimental probability be close to the theoretical probability?
Not necessarily. There may not even be a way to work out a theoretical probability. Furthermore, there is always a chance, however small, that the experimental probability is way off.
Can probability values be negative?
No. Probability values always have to be positive.
Can a probability assume a negative value?
No. Probability is always represented as a positive ratio/fraction/percent.
Are all probability values always positive numbers?
yes.
Does a negative z score yield a negative probability value?
no, z score can be negative but a probability is a always positive between 0 and 1.
Are the probability values always greater than or equal to 0 or less than or equal to 1 or all positive numbers?
Probability values are never negative and are always between 0-1 according to the definition Probability of A= Number of outcomes classified as A/Total number of possible outcomes
If a test of hypothesis has a type 1 error probability 01?
If the type 1 error has a probability of 01 = 1, then you will always reject the null hypothesis (false positive) - even when the evidence is wholly consistent with the null hypothesis.
Probability of 2 out of 12 trials being positive if the probability of each trial being positive is 5 percent?
This is a binomial probability distribution; n=12, r=2 & P=.05. Read directly from the table probability of 2 is .099 (plugging this data into my calculator gives 0.09879).
What is the probability that a standard normal variable z is positive is?
It is 0.5
What is the probability of testing positive for the disease?
The probability isP(you have the disease)*P(the test shows positive when testing someone with the disease) +P(you don't have the disease)*P(the test shows positive when testing someone without the disease).The second category is particularly important if the disease is rare but the probability of a type II error is large.
Probability of an impossible event is?
an impossible event has a probability of 0, it will never occur a certain event has a probability of 1, it will always occur
Why is the square of a number always a positive number?
The square of a number is always two numbers multiplied together. A positive times a positive is always positive, and a negative times a negative is always positive.
Why will a density curve always give a probability of zero?
It will not. For the interval (x, x+dx) it may well give a non-zero probability. With a continuous distribution, the probability of any particular value is always 0. What the probability density function gives is the probability that the variable is NEAR the selected value.
