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In a report issued by the U.S Department of Transportation in 2020, it was predicted that the number of passengers boarding
1. 0 answers
2. 824 views
The California emissions cap is set at 400 million metric tons of carbon dioxide equivalent in 2015 and is expected to drop by
1. 0 answers
2. 1,015 views
Food prices have been rising at a rate of 4% per year for several years. If the annual cost of food for a typical family of four
1. 1 answer
2. 439 views
How many days will it take for a sum of $2000 to earn $40 interest if it is deposited in a bank paying simple interest at the
1. 2 answers
2. 439 views
A coin is weighted so that the probability of obtaining a head in a single toss is .4. If the coin is tossed 25 times, what is
1. 0 answers
2. 746 views
Which variable is for the equation of the horizontal line and which variable is for the equation of the vertical line?
1. 1 answer
2. 474 views
The number of chocolate chips per cookie in Charlie's Chocolate Chip Cookie Shop is given by the following probability
1. 1 answer
2. 519 views
Emilie is playing a game. The probabilities that she will win $5, win $10 or lose $3 are 0.2, 0.1, and 0.7, respectively. What
1. 1 answer
2. 443 views
The probability that Santa Claus is coming to town is 0.8. The probability that the Grinch is coming to town is 0.15. Find the
1. 1 answer
2. 539 views
Bill entered three contests. The probability he will win contest A is .2, the probability that he will win Contest B is .1 and
1. 1 answer
2. 589 views
Cindy's Ciders produces and sells spiced apple cider. Cindy has a monthly fixed cost of $3080 and production costs of $3 per
1. 1 answer
2. 543 views
Patty's pastries has 400 employees. It has been estimated that the probability of a worker gaining 6 pounds per year is .2. Use
1. 0 answers
2. 453 views
Thomas planted tomatoes, peppers, and green beans. The probability that the tomato plant will produce tomatoes is .8, the
1. 2 answers
2. 638 views
How many different 7 digit numbers can be formed from the numbers "2,3,4,5,6,7,8" ?Is this a permutation?
1. 1 answer
2. 449 views
Jonathan wants to have $14,300 in 6 years. How much money should he deposit into an account paying 6.2% yearly interest,
1. 1 answer
2. 453 views
Patty takes out a 105 day loan for $12,000. The yearly interest rate for the loan is 13.5% simple interest. How much money will
1. 1 answer
2. 505 views
Old McDonald has 500 acres of land to plant in corn and soybeans. The cost of cultivating corn is $42 per acre and the cost of
1. 3 answers
2. 659 views
1) The chances you go to the game on Saturday is 0.3, and the probability of staying home on Sunday is 0.4. Find the probability
1. 2 answers
2. 529 views
For these two review questions, I want to make sure I'm understanding the concept behind these.1) A dessert stand sells candy
1. 2 answers
2. 559 views
I am reviewing for my final exam on December 11. I'm working on a practice sheet and I want to know if my answers are correct.1)
1. 5 answers
2. 629 views
The scores on a sociology examination are normally distributed with a mean of 70 and a standard deviation of 10. If the
1. 1 answer
2. 672 views
1) If the probability that a tennis player will serve an ace is .27, what is the probability that he will serve: (only set up.
1. 0 answers
2. 735 views
A binomial experiment consists of 9 independent trials. The probability of success in each is 0.4.a) Using the tables
1. 0 answers
2. 568 views
Molly's mugs has the following in stock: (below here is a table)Small medium large total Plastic 12 8 5 25 Metal 6 14 10 30
1. 3 answers
2. 538 views
I completed a review sheet and I need someone to check my answers. I will post the link here so I am not pestering everyone by
1. 1 answer
2. 479 views
I am studying for an exam on Wednesday that covers probability. But I wanted to check in here for a refresher since it's been 2
1. 2 answers
2. 556 views
In a study conducted by the Bank of America, it was found that 34% of young Millenials say that they sleep with their smartphone
1. 2 answers
2. 463 views
I only need my answer to be checked.In a lottery, 5,000 tickets are sold for $1. One first place prize of $1,000, 1 second prize
1. 3 answers
2. 552 views
A fair die is rolled 4 timesa) create a probability distribution for the number of times the die rolls a 3. Do I solve this
1. 0 answers
2. 483 views
Given the probability that a certain tennis player will serve an ace is 1/4 and serves 5 times.a) write a probability
1. 1 answer
2. 631 views
The following table gives the total caseload in the New York State courts form 2004 through 2009.Year 2004 2005 2006 2007 2008
1. 3 answers
2. 647 views
Find C(n,x) p^xq^n-x for the given values of n,x, and p.n=4, x=2, p=1/3 Did I set this up right? To find q: 1-1/3=2/3 n-x=4-2=2
1. 2 answers
2. 306 views
Justify if the following is a binomial.Rolling a fair die 3 times and observing the number that appears uppermost. There are 3
1. 2 answers
2. 474 views
Justify whether or not the following is a binomial.Rolling a fair die 3 times and observing the number of times a 6 is thrown. I
1. 2 answers
2. 625 views
The birthrates in the U.S for the years 2003-2012 are given in the following table. (The birthrate is the number of live
1. 2 answers
2. 515 views
When looking at histograms, how can you tell based on the bars if there is a small variance or a large variance?
1. 1 answer
2. 366 views
Based on the table, find the variance.X 1 2 3 4 P(x=x) .4 .3 .2 .1 I previously computed the mu and got 2 as an answer. what I
1. 1 answer
2. 504 views
The island club... ten thousand tickets sold for $2 each... first prize of $3000, 3 second prizes of $1000 each, 5 third prizes
1. 1 answer
2. 693 views
I know I posted this yesterday but I wanted to check if my answer to part b is correct.In a lottery, 5000 tickets are sold for
1. 1 answer
2. 510 views
In a lottery, 5000 tickets are sold for $1 each.... one1st prize of $2000, 1 2nd prize of $500, 3 third prizes of $100, and 10
1. 2 answers
2. 814 views
During the first year at a university that uses a four-point grading system, a freshman took ten three-credit courses and
1. 1 answer
2. 1,223 views
I only need someone to check my answers.Find the expected value of a random variable X having the following probability
1. 2 answers
2. 450 views
I only need someone to check my answers for two questions.1) In a survey of 1000 people about emergency living expense savings
1. 0 answers
2. 630 views
How would you find p(AlBcomplement)?Just 1- the probability of b?
1. 1 answer
2. 359 views
Two cards are drawn without replacement from a well-shuffled deck of 52 playing cards.a. What is the probability that the first
1. 2 answers
2. 2,666 views
A pair of fair dice is rolled. Let E denote the event that the number landing uppermost on the first die is a 3, and let F
1. 2 answers
2. 1,227 views
I'm not sure if I'm doing this right.Determine whether events A and B are independent. P(A) =.5, P(B)= .7, P(AUB)= .85 P(AUB) =
1. 0 answers
2. 425 views
In a survey of 1000 social media account holders, the following question was asked: how many social media accounts do you have?
1. 2 answers
2. 712 views
An experiment consists of recording in order of their births, the sex composition of a four child family in which the children
1. 2 answers
2. 1,115 views
What makes two events complementary? What does complementary even mean?
1. 2 answers
2. 408 views
Question says " Are events E & F mutually exlusive". I am given E = {a,b} and F = {a,d,f}.I think they are not. I think that if
1. 1 answer
2. 482 views
Twelve graduate students have applied for three available teaching assistantships. In how many ways can the assistantships be
1. 2 answers
2. 1,649 views
The U.S Olympic gymnastics team for the 2016 Rio Games comprised five women and five men. In how many ways can this group of
1. 1 answer
2. 817 views
1) At a college library exhibition of faculty publications, 3 math books, 4 social science books, and 3 bio books will be
1. 1 answer
2. 1,021 views
When is it appropriate to use the combination formula in a word problem? When is it appropriate to use the permutation formula
1. 1 answer
2. 428 views
6!/2!3!For this problem, I did 6*5*4*3*2*1/2*1*3*1 for the answer 729/6=120
1. 3 answers
2. 346 views
The panini cafe has a special lunch menu in which the diner chooses a soup or salad, a main course, and a dessert. There are 3
1. 3 answers
2. 839 views
In the game of blackjack, a 2-card hand consisting of an ace and either a face card or a 10 is called a "blackjack". If a
1. 2 answers
2. 4,400 views
In a survey of 120 consumers conducted in a shopping mall, 80 consumers indicated that they buy Brand A of a certain product, 68
1. 3 answers
2. 2,230 views
For this exercise, let A and B be subsets of a universal set U and suppose n(U)= 200, n(A)= 100, n(B)= 80, and n (A∩B)=40.
1. 0 answers
2. 718 views
If both set x and set y have no numbers in common does x∩y become a blank set written as { }?
1. 2 answers
2. 415 views
Is the element the number of numbers in a set?
1. 2 answers
2. 428 views
What does exponent little c stand for?
1. 1 answer
2. 359 views
The set of gold medalists in the 2014 Winter Olympic games in set builder notation.I don't get what I'm supposed to do.
1. 4 answers
2. 1,027 views
I know I put this question yesterday but I tried it again with a new understanding.Val sold 2 types of Valentine's day bouquets:
1. 2 answers
2. 520 views
A basket of May flowers at Betty's Blooms cost $35 today. Assuming that inflation has been running at 5.1% per year for the past
1. 2 answers
2. 640 views
I only need my problem to be checked.What is the effective annual rate of an account offering .09% monthly interest compounded
1. 1 answer
2. 518 views
What formula would you use when there is inflation and you must find the price of a product in the past several years? But you
1. 0 answers
2. 327 views
Maxwell purchased $15,000 worth of 52-week T-Bills for $14,650. What will the rate of return be on his investment?Did I set the
1. 3 answers
2. 3,485 views
Simple interest grew from the initial amount $1000 to $1075 in 9 months. Find the interest rate.Like always, I will explain my
1. 0 answers
2. 738 views
A bank deposit paying simple interest grew from an initial amount of $1000 to $1075 in 9 months, Find the interest rate.I know
1. 3 answers
2. 1,804 views
Question says" Find the accumulated amount at the end of 9 months on an $800 deposit in a bank pating simple interest at a rate
1. 3 answers
2. 2,160 views
For the substitution method, is there a right equation to pick from the set and rewrite it?My problem is 3x-2y=1 2x+4y=1 I chose
1. 1 answer
2. 503 views
A ball and a bat cost $110 total. The bat costs $100 more than the ball. How much does the ball cost?For this system of
1. 2 answers
2. 1,213 views
For 2x-5y=16, 6x-15y=30 I think there are zero number of solutions.
1. 2 answers
2. 548 views
1) x+2y=7, 2x-y=4What I did: multiply 2x-y=4 by -2 so I could eliminate the y variable. -4x-2y = -8 + x +2y =7 = -3x =-1 Divided
1. 2 answers
2. 551 views
Only need my answer to be check. Problem:2x-3y=6 3x+6y=16 I rewrote both as 1) y=2/3x-2 2)1/2x+8/3 set them both equal to each
1. 2 answers
2. 439 views
Find the point of intersection:y=3x+y y=-2x+9 My work: 3x+4= -2x+9 3x+4-4=-2x+9-4
1. 3 answers
2. 507 views
As cell phones proliferate, the number of pay phones continues to drop. The number of pay phones from 2004 through 2009 (in
1. 1 answer
2. 1,796 views
AutoTime, a manufacturer of electronic digital timers, has a monthly fixed cost of $48,000 and a production cost of $8 for each
1. 3 answers
2. 4,008 views
The supply equation for the Wilkinson washable computer keyboard is p=0.03x+80. Where x is the quantity supplied per month and p
1. 0 answers
2. 905 views
The quantity demanded for a certain brand of MP3 players is 200 units when the price is set at $90. The quantity demanded is
1. 1 answer
2. 1,004 views
A workcenter system purchased at a cost of $60,000 in 2015 has a scrap value of $12,000 at the end of 4 years. If the
1. 1 answer
2. 3,733 views
The demand equation for the BWS Bluetooth wireless loudspeaker is p=-0.05x+200 where x is the quantity demanded per month and p
1. 2 answers
2. 1,371 views

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