Mary is deciding whether to book the cheaper flight home from college after her final​ exams, but​ she's unsure when her last exam will be. She thinks there is only a 10​% chance that the exam will be scheduled after the last day she can get a seat on the cheaper flight. If it is and she has to cancel the​ flight, she will lose ​$200. If she can take the cheaper​ flight, she will save ​$50.   ​a) If she books the cheaper​ flight, what can she expect to​ gain, on​ average? ​b) What is the standard​ deviation?

Q: How much (on average) does the carnival gain on each play? (If the carnival looses money, enter a…

A:

Q: Mr.Costo is shopping for a new car.The salesman tells her the price will be $18,795 before a 10%…

A: Marked price = The price at which product is intended to be sold before discount.  Calculate the…

Q: Jeremy went to the mall with $150. He went into one store where he found the following items that he…

A: Total cost Jeremy have is $150. He wanted 1 pair of jeans, 3 shirt and 1 hat. The cost of the above…

Q: For graduation photographs, families have the option to either to buy digital file.    The…

A: Purchasing the digital file and printing the photos at a local store costs $55+($3× 12)= $91.

Q: Susan is attempting to calculate what grade she needs on her Biology final exam in order to make an…

A: Here we solve this problem using inequality.

Q: A camcorder with a price of $300 is discounted 25 % Later , the same camcorder is discounted again…

A: Discount is the deduction from the usual cost of something. So, if we are providing a discount of r%…

Q: Amy invested $500 per month in a 401k that earned 6% annual return for 40 years. Hank invested…

A:

Q: An artist travels to craft fairs all summer long. She must book her booth at a June craft show six…

A:

Q: You work for a car dealership where you earn 16% commission on the profit of a car sale under $800,…

A: Given that you earn 24% on the profit of a sale above $800 but less than or equal to $2,000. And…

Q: The Fresh Oven Bakery sells the pies for $3 each. She knows that the number of pies it can sell…

A: Given:-               Selling price P = $ 3 each                Baking cost C = $ 2.50 each

Q: A chef must decide how many chocolate lava cakes to prepare for the upcoming Mother's Day Dinner…

A: The provided probabilities are; P(ordering 50 cakes) = 0.30 P(ordering 100 cakes) = 0.50 P(ordering…

Q: Sam's Smoothies serves many kinds of smoothies by blending fresh fruits and yogurt. Alex loves…

A: Given query is to find the amount spend on smoothie.

Q: Some stores allow their customers to stack coupons or discounts. This means that customers can use…

A: D is the correct answer

Q: Develop a complete decision tree for this problem.

A: Given, Cost of making lava cake = $5 Selling price of lava cake = $7 Profit = Sales - cost Sales =…

Q: An artist travels to craft fairs all summer long. She must book her booth at a June craft show six…

A:

Q: yler wants to buy a computer monitor. He found the monitor he wants on three different websites. The…

A: The original price of the monitor is $90 on for all the three websites. The website R has a sale for…

Q: Hobby Lobby is offering two different packages of wrapping paper. Package A contains two rolls: each…

A:

Q: You decide to go school shopping one day and make several different purchases. You bought a few…

A: Let the amount of cash at the start equals to 'x'There are so many methods of solving this…

Q: Both ashley and Bill want to buy a $400 giant teddy bear. Ashley currently has $80 a 15% off coupon…

A: Given Data:  Cost of teddy bear=$400   Let 'x' be the number of days it takes Ashley to buy the toy…

Q: James, Cierra, and Lamont went shopping together. One of them bought a shirt, another bought…

A:

Q: A university student is offered a choice of jobs for the summer months (16 weeks). Job A pays $400 a…

A: A university student is offered a choice of jobs for the summer months(16 weeks). Job A pays $400 a…

Q: Dave and Ellen are newly married and living in their first house. The yearly premium on their…

A: The answer is attached below,

Q: The stores listed each have the same infinity gem for an original price of $289.59. At which store…

A:

Q: Last year’s freshman class at Big State University totaled 5,324 students. Of those, 1,253 received…

A:

Q: John wants to buy his first car by the end of this year. For that, he asked his relatives to gift…

A: First he should meet his mother, so now he got $ 2500.