Find the probability that she has fewer children than the Spanish average.
Find the probability that she has more children than the Spanish average .
$X$ = the number of children for a Spanish woman
0, 1, 2, 3,...
$X$ ~
$\text{P(1.47)}$
0.2299
0.5679
0.4321
Fertile (female) cats produce an average of 3 litters per year.
(Source: The Humane Society of the United States) . Suppose that one fertile, female cat is randomly chosen. In one year, find the probability she produces:
No litters.
At least 2 litters.
Exactly 3 litters.
A consumer looking to buy a used red Miata car will call dealerships until she finds a dealership that carries the car. She estimates the probability that any independent dealership will have the car will be 28%. We are interested in the number of dealerships she must call.
On average, how many dealerships would we expect her to have to call until she finds one that has the car?
Find the probability that she must call at most 4 dealerships.
Find the probability that she must call 3 or 4 dealerships.
$X$ = the number of dealers she calls until she finds one with a used red Miata
1, 2, 3,...
$X$ ~
$\text{G(0.28)}$
3.57
0.7313
0.2497
Suppose that the probability that an adult in America will watch the Super Bowl is 40%. Each person is considered independent. We are interested in the number of adults in America we must survey until we find one who will watch the Super Bowl.
How many adults in America do you expect to survey until you find one who will watch the Super Bowl?
Find the probability that you must ask 7 people.
Find the probability that you must ask 3 or 4 people.
A group of Martial Arts students is planning on participating in an upcoming demonstration. 6 are students of Tae Kwon Do; 7 are students of Shotokan Karate. Suppose that 8 students are randomly picked to be in the first demonstration. We are interested in the number of Shotokan Karate students in that first demonstration. Hint: Use the Hypergeometric distribution. Look in the Formulas section of 4: Discrete Distributions and in the Appendix Formulas.
How many Shotokan Karate students do we expect to be in that first demonstration?
Find the probability that 4 students of Shotokan Karate are picked for the first demonstration.
Suppose that we are interested in the Tae Kwan Do students that are picked for the first demonstration. Find the probability that all 6 students of Tae Kwan Do are picked for the first demonstration.
4.31
0.4079
0.0163
The chance of a 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.
How many audits are expected in a 20 year period?
Find the probability that a person is not audited at all.
Find the probability that a person is audited more than twice.
Questions & Answers
Is there any normative that regulates the use of silver nanoparticles?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
Do you know which machine is used to that process?
Source:
OpenStax, Collaborative statistics (custom lecture version modified by t. short). OpenStax CNX. Jul 15, 2013 Download for free at http://cnx.org/content/col11543/1.1
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