Chapter 4: Q. 57 (page 287)
Use the following information to answer the next six exercises: On average, a clothing store gets customers per day.
What values does take on?
Short Answer
The random variable can take valueslocalid="1649709996909"
Chapter 4: Q. 57 (page 287)
Use the following information to answer the next six exercises: On average, a clothing store gets customers per day.
What values does take on?
The random variable can take valueslocalid="1649709996909"
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A lacrosse team is selecting a captain. The names of all the seniors are put into a hat, and the first three that are drawn will be the captains. The names are not replaced once they are drawn (one person cannot be two captains). You want to see if the captains all play the same position. State whether this is binomial or not and state why.
The chance of an IRS audit for a tax return with over $25,000 in income is about 2% per year. We are interested in the expected number of audits a person with that income has in a 20-year period. Assume each year is independent.
a. In words, define the random variable X.
b. List the values that X may take on.
c. Give the distribution of X. X ~ _____(_____,_____)
d. How many audits are expected in a 20-year period?
e. Find the probability that a person is not audited at all.
f. Find the probability that a person is audited more than twice
Is it likely that there will be more than 20 teens killed from motor vehicle injuries on any given day in the U.S.? Justify your answer numerically.
Define the random variable
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