Which of the following is not a characteristic of a probability density function f(x)?Multiple Choicef(x) becomes zero or approaches zero if x increases to +infinity or decreases to −infinity.f(x) is symmetric around the mean.The area under f(x) over all values of x equals one.f(x) ≥ 0 for all values of x.

Which of the following is not a characteristic of a uniform distribution?a.All outcomes are equally likely.b.The probability density function is constant within a given interval.c.The mean and standard deviation are equal.d.The distribution is symmetric.

The cumulative distribution function F(x) of a continuous random variable X with the probability density function f(x) is which of the following?Multiple ChoiceThe area under f over all values that are x or less.The area under f over all values x.The area under f over all non-negative values that are x or less.The area under f over all values that are x or more.

Which of the following is not a characteristic of the normal distribution? It is a symmetrical distribution The mean is always zero It is a bell-shaped distribution The area under the curve equals one None of the preceding

Which of the following is not a characteristic of the normal distribution?

Which of the following is NOT a characteristic of the standard normal distribution?Select one:a.50% of all values are negative.b.97.5% of all values are greater than -2c.The mean, median and mode are all equal.d.47.5% of all values lie between -1 and 2.