Questions from Business Statistics

Q: A restaurant has four bottles of a certain wine in stock.

A restaurant has four bottles of a certain wine in stock. The wine steward does not know that two of these bottles (Bottles 1 and 2) are bad. Suppose that two bottles are ordered, and the wine steward...

Q: Suppose that 20% of all homeowners in an earthquake prone area

Suppose that 20% of all homeowners in an earthquake prone area of California are insured against earthquake damage. Four homeowners are selected at random. Define the random variable x as the number a...

Q: Suppose x = the number of courses a randomly selected student at

Suppose x = the number of courses a randomly selected student at a certain university is taking. The probability distribution of x appears in the following table: a. What is P(x = 4)? b. What is P(x...

Q: A pizza shop sells pizzas in four different sizes. The 1000

A pizza shop sells pizzas in four different sizes. The 1000 most recent orders for a single pizza resulted in the following proportions for the various sizes: With x = the size of a pizza in a single...

Q: Of all airline flight requests received by a certain ticket broker,

Of all airline flight requests received by a certain ticket broker, 70% are for domestic travel (D) and 30% are for international flights (I). Define x to be the number that are for domestic flights a...

Q: Suppose that a computer manufacturer receives computer boards in lots of five

Suppose that a computer manufacturer receives computer boards in lots of five. Two boards are selected from each lot for inspection. You can represent possible outcomes of the selection process by pai...

Q: A business has six customer service telephone lines. Let x denote

A business has six customer service telephone lines. Let x denote the number of lines in use at any given time. Suppose that the probability distribution of x is as follows: Write each of the followi...

Q: A contractor is required by a county planning department to submit anywhere

A contractor is required by a county planning department to submit anywhere from one to five forms (depending on the nature of the project) when applying for a building permit. Let y be the number of...

Q: A new battery’s voltage may be acceptable (A) or unacceptable

A new battery’s voltage may be acceptable (A) or unacceptable (U). A certain flashlight requires two batteries, so batteries will be independently selected and tested until two acceptable ones have be...

Q: Let x denote the lifetime (in thousands of hours) of

Let x denote the lifetime (in thousands of hours) of a certain type of fan used in diesel engines. Suppose the density curve of x is as pictured. Shade the area under the curve corresponding to each...