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Probability Distribution
Page 9
Questions (542)
1. Use the following to answer questions: The table below presents the probability distribution for X = the number of email
2 answers
asked by
Denise
612 views
At the end of the festival the organizers estimated that a family of participants spent an average of $90.00 with a standard
4 answers
asked by
Diane
595 views
Scores on the ACT college entrance exam are Normally distributed with a mean µ = 20 and standard deviation σ = 5. An SRS of 25
2 answers
asked by
Alyssa
634 views
One last one.
A poll at Steve's high school was taken to see if students are in favor of spending class money to expand the
1 answer
asked by
Josh
607 views
For a normal distribution with a mean of 140 and a standard deviation of 55 find each value requested.
a. What is the minimum
2 answers
asked by
tammy
597 views
The next three questions refer to the following situation. Data from previous years reveal that the distribution if first exam
2 answers
asked by
Tara
631 views
Statistical Abstracts (117th edition) provides information aboutthe number of
registered automobiles, including taxis, by state.
2 answers
asked by
Anonymous
583 views
Of 200 adults, 176 own one TV set, 22 own two TV sets, and 2 own three TV sets. A person
is chosen at random. a. What is the
2 answers
asked by
HAPPY
556 views
A sign on the petrol pumps of a chain of petrol stations encourages customers to have their oil checked, claiming that one out
2 answers
asked by
matt
567 views
Mark and job are basketball players and will play a game. In the game, Mark will get 2 free throw attempts and John will get
2 answers
asked by
sarah
562 views
AAA reports that the average age of a car on U.S. roads in recent years has risen to 7.5 years. Suppose that the distribution of
2 answers
asked by
Anonymous
556 views
A manufacturing facility produces iron rods whose mean diameter is 2.5 inches with a standard deviation of 0.2 inch. If a sample
4 answers
asked by
Steven
567 views
Consider the following. (Give your answers correct to four decimal places.)
(a) Find P(-2.07 < z < 0.00). (b) Find P(-1.86 < z <
4 answers
asked by
Ayden
559 views
If the mean rate of arrival in a restaurant is 10 customers per hour, what is the probability of having 4 customers arriving in
3 answers
asked by
Pavlos Cs
544 views
4. John Rengel is the Quality Assurance Supervisor for Vino Supremo Vinyards. He knows that 10 percent of each box of corks is
3 answers
asked by
Lise
540 views
Construct the probability distribution for the value of a 2-card hand dealt from a standard deck of 52 cards (all face cards
2 answers
asked by
Carlos
543 views
two dices are tossed once. let the random variable be t he sum of the up faces on the dice. A). find and graph the probability
2 answers
asked by
sharik
536 views
An urn contains 10 balls of which 6 are white, 3 are red and 1 is green. Two balls are drawn at random from the urn. Find the
2 answers
asked by
sam
546 views
The weights of boxes of Brand Z cereal were found to be normally distrubted with a mean of 16.5 ounces and a standard deviation
2 answers
asked by
brenda
535 views
Assume that about 45% of all U.S. adults try to pad their insurance claims. Suppose that you are the director of an insurance
2 answers
asked by
Jacob
537 views
2. The arrivals of customers at a drive-in banking window are governed by the Poisson distribution. Each customer requires 5
2 answers
asked by
Jus
529 views
the daily milk production for a certain type of dairy cow has a mean of 43 pounds per day with a standard diviation of 5 pounds
2 answers
asked by
bob
512 views
. Suppose in an event of fire, the probability is 95% that fire alarm will ring in a building. Let x denote the number of fire
2 answers
asked by
Zeet Ashrabi
530 views
The probability that a randomly chosen person in Botswana is 65 or older is approximately 0.2.
a) What is the probability that,
2 answers
asked by
mbambo
538 views
Bottles of a popular cola contain a mean amount of 300 mL of cola. There is some variation from bottle to bottle because the
2 answers
asked by
Maria Elizabeth
535 views
According to Chebyshev’s theorem, what proportion of a distribution will be with k=4 standard deviations of the mean? Show all
2 answers
asked by
Sharon
533 views
I'm working on a statistics project and need to evaluate the expected value using hypergeometric distribution. I am unsure which
2 answers
asked by
cp
497 views
Suppose that the amount of time it takes the IRS to refund to taxpayers is normally distributed with a mean of 12 weeks and a
1 answer
asked by
James
516 views
Did you ever buy an incandescent light bulb that failed (either burned out or did not work) the first time you turned the switch
2 answers
asked by
Jenny
519 views
Suppose X~N(11,4)
What is the standard deviation
1 answer
asked anonymously
10 views
Which represents the standard normal distribution:
A) X~N(0, 1) B) X~N(0, 0.1) C) X~N(1, 1) D) X~N(1, 0)
1 answer
asked anonymously
18 views
If X~B(20, 8)
What is the probability that P(X=12)
1 answer
asked anonymously
13 views
The mayor of the town of Quahog, Rhode Island, Adam West, conducted a study to determine the mean household income of his
2 answers
asked by
Cara
515 views
Let X represent the outcome of a single roll of a fair die. Suppose you will win $2 if the outcome is either 2 or 5, and lose $1
1 answer
asked by
jazmin cortez
509 views
In the past, the value of houses a local realtor has sold is normally distributed with a mean of $253,000 with a standard
2 answers
asked by
kayla
507 views
The probability that a person has an unlisted telephone number is 0.15. The district manager of
a political action group is
1 answer
asked by
Joy
506 views
Suppose that you have a normally distributed population with unknown μ and standard deviation σ = 20. Given that the
2 answers
asked by
rbcjy
502 views
The times for completing one circuit of a bicycle course are normally distributed with a mean of 81.7 minutes and a standard
2 answers
asked by
john
493 views
⦁ Find the probability that a data value picked at random from a normal population will have a standard score (z) that lies
2 answers
asked by
sharon
490 views
In the past year, Jack's Pizaa Resturant grossed more than $1500 a day for about 83% of its business days. Suppose 8 days are
2 answers
asked by
Kim
482 views
the heights of 1000 students in a college are normally distributed with a mean 5’10" and SD 2". Use 68% for the region from
2 answers
asked by
hr
493 views
All deal with a random variable X that follows a normal probability distribution with mean equal to 37 and a standard deviation
1 answer
asked by
luke
495 views
A sixth form class consists of 6 girls and 9 boys. Three students from the class are chosen at random. The number of boys chosen
1 answer
asked by
Nabiha
502 views
How do I generate the bezier curve control points to represent a normal (Gaussian) distribution?
1 answer
asked by
statstudent
465 views
If 30% of students over the age of 18 smoke and 9 students are chosen at random. What is the probability that less than 2 of
2 answers
asked by
Vincent
452 views
A survey of 50 lobster fishermen on Funafuti (an island in Tuvalu), found that they catch an average of 32 pounds of lobster per
2 answers
asked by
Qwenie
480 views
A newspaper survey found that 65% of readers found online tutorials useful. If a random sample of 9 readers is selected, compute
2 answers
asked by
me
482 views
Exponential distribution was used to model the lengths of CD-ROM drives in a two drive system. The two CD-ROM drives operate
1 answer
asked by
Danielle
481 views
Suppose the number of customer complaints per day on the morning shift 6-12 noon at Doys is distributed as
# of complaints f(x) 0
1 answer
asked by
James
484 views
Scores on the LSAT are approximately normally distributed. In fact, published reports indicate that approximately 40 percent of
1 answer
asked by
Mike
476 views
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