Question

6) The proportion of houses that have smoke detectors in Fort Wayne is 70%. Suppose 10...

6) The proportion of houses that have smoke detectors in Fort Wayne is 70%. Suppose 10 houses are randomly selected.

a) Use the binomial distribution to find the probability that exactly 5 houses will have smoke detectors.

b)Use the binomial distribution to find the probability that eight or more houses will have smoke detectors.

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
An ordinance requiring that a smoke detector be installed in all previously constructed houses has been...
An ordinance requiring that a smoke detector be installed in all previously constructed houses has been in effect in a particular city for 1 year. The fire department is concerned that many houses remain without detectors. Let p = the true proportion of such houses having detectors, and suppose that a random sample of 20 homes is inspected. If the sample strongly indicates that fewer than 80% of all houses have a detector, the fire department will campaign for a...
American Airlines' flights from Boston to Atlanta are on time 70% of the time. Suppose 8...
American Airlines' flights from Boston to Atlanta are on time 70% of the time. Suppose 8 flights are randomly selected, and the number on-time flights is recorded. Use the binomial distribution to compute the following. (a) The probability that exactly 2 flights are on time is (b) The probability that more than 7 flights are on time is (c) The probability that at most 4 flights are on time is Round all answers to at least 4 decimal places.
6) An official from the securities commission estimates that 70% of all online bankers have profited...
6) An official from the securities commission estimates that 70% of all online bankers have profited from the use of insider information. Assume that 15 online bankers are selected at random from the commission's registry. What is the probability that exactly 8 have not profited from insider information? What is the probability that at most 5 have profited from insider information? What is the probability that not all the selected online bankers have profited from insider information? What is the...
6) An official from the securities commission estimates that 70% of all online bankers have profited...
6) An official from the securities commission estimates that 70% of all online bankers have profited from the use of insider information. Assume that 15 online bankers are selected at random from the commission's registry. Use the binomial formula or table (see last page) to answer the following questions. If using table, do not round final answers. Otherwise, round to 4 decimal places. a) What is the probability that exactly 8 have not profited from insider information? b) What is...
a.) If 40% of all commuters ride to work in carpools, what is the expected number...
a.) If 40% of all commuters ride to work in carpools, what is the expected number of workers who will ride in carpools when 5 people are randomly selected b.) Find the variance for the values of n and p when the conditions for the binomial distribution are met.    n = 200, p = 0.25 37.5 50 6.1 150 c.) Find the standard deviation for the values of n and p when the conditions for the binomial distribution are met....
In a certain large population of manatees in Florida, the proportion that have scars from boat...
In a certain large population of manatees in Florida, the proportion that have scars from boat collisions is approximately 0.88. Suppose 12 manatees are randomly selected from this population. a) What is the probability that exactly 10 have scars from boat collisions?   Give your response to at least 3 decimal places. b) What is the probability that more than 10 have scars from boat collisions?   Give your response to at least 3 decimal places. c) What is the probability that...
Suppose that in the OSU student population, 20% of blood donors have type A blood, 20%...
Suppose that in the OSU student population, 20% of blood donors have type A blood, 20% have type B, 50% have type O, and 10% have type AB. Frequencies are summarized in the following table. Blood Type Frequency A 20% B 20% O 50% AB 10% (a) In a random sample of 5 students donors, what is the probability of obtaining at most 2 blood donors that have type B blood? Why is this a binomial distribution? (b) In a...
It is known that 10% of the trees in a Timber Supply Area (TSA) are infested...
It is known that 10% of the trees in a Timber Supply Area (TSA) are infested with the mountain pine beetle. a) If 6 trees are randomly selected, what is the probability that 2 will be infested? b) If 6 trees are randomly selected, what is the probability that 2 or more will be infested? c) What is the mean and the standard deviation of the distribution described above (a and b)? d) If trees are randomly selected one at...
Suppose that 80% of adults with allergies report symptomatic relief with a specific medication and the...
Suppose that 80% of adults with allergies report symptomatic relief with a specific medication and the medication is given to 10 randomly selected adults with allergies. a. What is the plausible distribution of the number of adults out of 10 reporting symptomatic relief after taking the medication, normal, Poisson, or binomial? Find the mean and variance of the distribution you choose. b.What is the probability that eight or more adults reporting symptomatic relief after taking the medication? c. What is...
suppose there is a 0.85 probability that a randomly selected adult knows what twitter is. If...
suppose there is a 0.85 probability that a randomly selected adult knows what twitter is. If 10 people are randomly selected, find the probability that a) exactly 9 know what twitter is, b) 9 or more know what twitter is