D. Get an unbiased estimate for p .E. Be able to use as the standard deviation of .
A maker of breakfast cereals plans to run a promotion in which an action figure is included in each
box of cereal. The more popular figures will appear in fewer boxes. The probability of getting a
box with each kind of toy is shown in the table below.
What is the probability that the first two randomly selected boxes contain Serenity and Blackstar?
A. 0.0216
B. 0.0432
C. 0.0468
D. 0.2784
E. 0.3000
A department store has a promotion in which it hands out a “scratchcard” at the checkout register,
with a percent discount concealed by an opaque covering. The customer scratches off the covering
and reveals the amount of the discount. The table below shows the probability that a randomly
selected card contains each percent discount.
What is the expected value of the percentage of discount?
A. 5%
B. 12%
C. 15%
D. 21%
E. 40%
In basketball, an offensive rebound occurs when a player shoots and misses, and a player from the
same team recovers the ball. For the 176 players on the roster for one season of professional men’s
basketball, the third quartile for the total number of offensive rebounds for one season was 143. If
five players are selected at random (with replacement) from that season, what is the approximate
probability that at least three of them had more than 143 rebounds that season?
A. 0.0127
B. 0.0879
C. 0.1035
D. 0.8965
E. 0.9121
- A new smartwatch is manufactured in one part of a factory, then secured for shipping in another,
independent part of the factory. The weight of the smartwatch has a mean of 62 grams and a