At a local restaurant 20% of the customers order the chef’s special the restaurant expects 230 customers
At a local restaurant 20% of the customers order the chef’s special suppose we define the binomial
XYZ corporation makes widgets it is known that 1% of the widgets are defective if XYZ

XYZ corporation makes widgets and it is known that 1% of the widgets are defective suppose we define the binomial
random
variable x as the number of defective widgets
which of the following are characteristics of a binomial
if we multiply each value of a discrete random variable by it’s probability p(x) and then sum the resulting products what do
we call the result

A drive-in movie theatre has kept the following records concerning the number of passengers per vehicle
True or false
the standard deviation of a discrete random variable x is the positive square root of the variance of x
Looking at the provided table calculate the variance of the discrete random variable x

Looking at the provided table calculate the standard deviation of the discrete random variable x
Looking at the provided table calculate the variance of the discrete random variable x

If x is a binomial random variable then what does p(x) refer to
A box contains 7 yellow 3 green 5 purple and 6 red candies jumbled together if 5 candies are taken randomly from the box
without replacement what is the expected number of red candies
The table below represents the joint probability distribution of x the number of heads and y the longest streak of heads in
four tosses of a fair coin. what is the probability of tossing 3 heads and having the longest streak of head be the length of 2

The table below represents the joint probability distribution of x the number of heads and y the longest streak of heads in
four tosses of a fair coin. given that the mean of x is 2 and the mean of y is 1.6875 what is the covariance of x and y
The table below represents the joint probability distribution of x the number of heads and y the longest streak of heads in
four tosses of a fair coin
The table below represents the joint probability distribution of x the number of heads and y the longest streak of heads in
four tosses of a fair coin

Suppose that x is a hypergeometric random variable how is the mean value of x calculated
Professor stats has 40 students
At a local dentists office 22% of the patients are found to have cavities what is the probability that exactly four of the next ten
patients will have a cavity

in a situation where we are sampling without replacement which type of distribution is most likely
suppose you are counting the number of successes ocurring in a fixed number of trials
At a local diner 30% of the customers order the chefs special what is the probability that exactly one of the next five
customers will order the chefs special

When you toss a fair die the expected value of x the number rolled is 3.5
A manufacturer claims that 95%

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- Fall '15
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- Probability theory, XYZ Corporation, Laurie, Kareem