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Stats: Check-In's: 5.1-5.2 Exam Practice
Questions and Answers
It is estimated that 45% of households own a riding lawn mower. A sample of 18 households is studied.
What is the probability that exactly 7 of these own a riding lawn mower? - ANSWER✔✔-0.1657
Determine the indicated probability for a binomial experiment with the given number of trials n and the
given success probability p.
n = 15, p = 0.6, P(10) - ANSWER✔✔-0.1859
Determine the indicated probability for a binomial experiment with the given number of trials n and the
given success probability p.
n = 11, p = 0.7, P(9) - ANSWER✔✔-0.1998
It is estimated that 25% of households own a riding lawn mower. A sample of 18 households is studied.
What is the probability that exactly 10 of these own a riding lawn mower? - ANSWER✔✔-0.0042
A multiple choice quiz consists of 100 questions, each with 5 possible answers. Find the mean for the
number of correct answers, if a student guesses on each question - ANSWER✔✔-20.0
A die is rolled 360 times. Find the standard deviation of the number of times a 3 will be rolled. -
ANSWER✔✔-7.1
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, Copyright © KAYLIN 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH NOVEMBER, 2024
Find the mean for the values of n and p when the conditions for the binomial distribution are met.
n = 600, p = 0.35 - ANSWER✔✔-210
A computer store has 75 printers of which 25 are laser printers and 50 are ink jet printers. If a group of
10 printers is chosen at random from the store, find the mean and variance of the number of ink jet
printers. - ANSWER✔✔-Mean = 6.7, Variance = 2.2
It is estimated that 40% of households own a riding lawn mower. A sample of 12 households is studied.
What is the probability that more than 9 of these own a riding lawn mower? - ANSWER✔✔-0.0028
The Australian sheep dog is a breed renowned for its intelligence and work ethic. It is estimated that 45%
of adult Australian sheep dogs weigh 65 pounds or more. A sample of 10 adult dogs is studied. What is
the probability that no more than 3 of them weigh 65 lb or more? - ANSWER✔✔-0.2660
The Australian sheep dog is a breed renowned for its intelligence and work ethic. It is estimated that 45%
of adult Australian sheep dogs weigh 65 pounds or more. A sample of 11 adult dogs is studied. What is
the probability that more than 8 of them weigh 65 lb or more? - ANSWER✔✔-0.0148
Determine the indicated probability for a binomial experiment with the given number of trials n and the
given success probability p.
n = 11, p = 0.2, P(Fewer than 4) - ANSWER✔✔-0.8389
The following table presents the probability distribution of the number of vacations X taken last year for
a randomly chosen family. Compute the mean μ.
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Stats: Check-In's: 5.1-5.2 Exam Practice
Questions and Answers
It is estimated that 45% of households own a riding lawn mower. A sample of 18 households is studied.
What is the probability that exactly 7 of these own a riding lawn mower? - ANSWER✔✔-0.1657
Determine the indicated probability for a binomial experiment with the given number of trials n and the
given success probability p.
n = 15, p = 0.6, P(10) - ANSWER✔✔-0.1859
Determine the indicated probability for a binomial experiment with the given number of trials n and the
given success probability p.
n = 11, p = 0.7, P(9) - ANSWER✔✔-0.1998
It is estimated that 25% of households own a riding lawn mower. A sample of 18 households is studied.
What is the probability that exactly 10 of these own a riding lawn mower? - ANSWER✔✔-0.0042
A multiple choice quiz consists of 100 questions, each with 5 possible answers. Find the mean for the
number of correct answers, if a student guesses on each question - ANSWER✔✔-20.0
A die is rolled 360 times. Find the standard deviation of the number of times a 3 will be rolled. -
ANSWER✔✔-7.1
Copyright © Stuvia International BV 2010-2024 Page 1/10
, Copyright © KAYLIN 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH NOVEMBER, 2024
Find the mean for the values of n and p when the conditions for the binomial distribution are met.
n = 600, p = 0.35 - ANSWER✔✔-210
A computer store has 75 printers of which 25 are laser printers and 50 are ink jet printers. If a group of
10 printers is chosen at random from the store, find the mean and variance of the number of ink jet
printers. - ANSWER✔✔-Mean = 6.7, Variance = 2.2
It is estimated that 40% of households own a riding lawn mower. A sample of 12 households is studied.
What is the probability that more than 9 of these own a riding lawn mower? - ANSWER✔✔-0.0028
The Australian sheep dog is a breed renowned for its intelligence and work ethic. It is estimated that 45%
of adult Australian sheep dogs weigh 65 pounds or more. A sample of 10 adult dogs is studied. What is
the probability that no more than 3 of them weigh 65 lb or more? - ANSWER✔✔-0.2660
The Australian sheep dog is a breed renowned for its intelligence and work ethic. It is estimated that 45%
of adult Australian sheep dogs weigh 65 pounds or more. A sample of 11 adult dogs is studied. What is
the probability that more than 8 of them weigh 65 lb or more? - ANSWER✔✔-0.0148
Determine the indicated probability for a binomial experiment with the given number of trials n and the
given success probability p.
n = 11, p = 0.2, P(Fewer than 4) - ANSWER✔✔-0.8389
The following table presents the probability distribution of the number of vacations X taken last year for
a randomly chosen family. Compute the mean μ.
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