0
Another name for the mean of a probability distribution is its expected value true or false?
Wiki User
∙ 14y ago
Yes, it is true.
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
True or False A sampling distribution is a probability distribution for a statistic?
The statement is true that a sampling distribution is a probability distribution for a statistic.
It's true or false that probability of standard normal random variable z is between 1.5 to 2.1 and is the same as the probability z is between -2.1 to -1.5?
True. Due to the symmetry of the normal distribution.
What is a requirement for use of the hypergeometric distribution Only 2 possible outcomes Trials are independent Probability of a success is greater than 1.0 Sampling with replacemen?
FALSE. The probability of success (or anything else) cannot be greater than 1.0
True or false The' probability that it will rain today is 0.65 and probability that it will rain or snow is 0.55?
False; the "or" is an additive property so the probability of rain or snow muse be greater than or equal to 0.65.
True or false Precision is a measure of how close an answer is to the actual or expected value?
false
True or False A sampling distribution is a probability distribution for a statistic?
The statement is true that a sampling distribution is a probability distribution for a statistic.
Is it true or false that the histogram of a probability distribution uses the physical area of each bar to represent its assigned probability?
False.
The F-distribution is symetrical around mean zero True or False?
The F-distribution is either zero or positive, so there are no negative values for F. This feature of the F-distribution is similar to the chi-square distribution. The F-distribution is skewed to the right. Thus this probability distribution is nonsymmetrical.
True or False the probability that a standard normal random variable Z is between 1.50 and 2.10 is the same as the probability Z is between -2.10 and -1.50.?
It is true because the distribution is symmetrical about Z=0.
It's true or false that probability of standard normal random variable z is between 1.5 to 2.1 and is the same as the probability z is between -2.1 to -1.5?
True. Due to the symmetry of the normal distribution.
What is a requirement for use of the hypergeometric distribution Only 2 possible outcomes Trials are independent Probability of a success is greater than 1.0 Sampling with replacemen?
FALSE. The probability of success (or anything else) cannot be greater than 1.0
True or false The' probability that it will rain today is 0.65 and probability that it will rain or snow is 0.55?
False; the "or" is an additive property so the probability of rain or snow muse be greater than or equal to 0.65.
If the tails of the normal distribution curve are infinitely long. Is it True or False that the total area under the curve is also infinite?
False. A normalized distribution curve (do not confuse normalized with normal), by definition, has an area under the curve of exactly 1. That is because the probability of all possible events is also always exactly 1. The shape of the curve does not matter.
This is an example of probability?
No, it is not. It is a statement. It is false, but that is not relevant.
A grouped frequency distribution is used when the range of data values is relatively small. True or false?
False. When the range is large you would use a grouped frequency distribution.
A region in which there is a high probability of finding an electron is called a field true or false?
false
Precision is a measure of how close an answer is to the actual or expected true or false?
false
