What is the probability that a randomly selected household will have three members? b. What is the probability that a randomly selected household will have more than four members? c. What is the probability that a randomly selected household will have at least four members?
2. The 2020 U.S. Census found the chance of a household being a certain size. The
data is in the table below:
Size of
Household
1 2 3 4 5 6 7 or more
a. What is the probability that a randomly selected household will have three members?
b. What is the probability that a randomly selected household will have more than four members?
c. What is the probability that a randomly selected household will have at least four members?
d. What is the probability that a randomly selected household will have at most four members?
e. Find the mean and standard deviation for household size (use 7 for the “7 or more” value of the
random variable).
f. Create a “usual
Max usual range: ? + 2? =
Min usual range: ? − 2? =
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