![jesse1384](/avatars/40595.jpg)
jesse1384
25.03.2021 •
Mathematics
Identify the scenarios in which the statistics are misleading.
A supermarket claims that 65% of its shoppers would like to see home delivery offered. They arrived at the conclusion by polling 50 randomly selected customers on a Tuesday afternoon.
A report by a company that manufactures hair brushes says 56% of people who buy their brushes own only one hair brush. The conclusion comes from a survey of 500 males who bought the company's brush.
A website claims that 47% of its visitors click on at least one advertisement while browsing the site. The information was collected from a database containing all the activity on the website during the past month.
A music store owner claims that about 15% of high school students in his city can play the piano. He concludes this after surveying 80 randomly selected students from the various high schools in his city.
A clothing store claims that 45% of its customers prefer skinny jeans over regular jeans. They concluded this from a survey which asked 120 randomly selected teenage customers which style they prefer.
Solved
Show answers
More tips
- A Auto and Moto What is the Average Lifespan of an Engine in a Car?...
- P Photography and Videography Understanding HDR: How It Works and Why You Need It...
- P Photography and Videography How to Choose the Perfect Photo Paper for Your Images?...
- C Computers and Internet How to Choose an Uninterruptible Power Supply (UPS) for Your Computer: Expert Tips...
- S Science and Technology How to choose a home theater system?...
- A Auto and Moto How to Choose a Car Wash? Tips and Recommendations...
- A Animals and plants How ants survive winter: exploring the secrets of their winter life...
- C Construction and repair How to Choose the Best Underfloor Heating?...
- S Sport When is the Champions League final?...
- S Sport When and Where Will the 2014 World Cup be Held?...
Answers on questions: Mathematics
- M Mathematics Use the equation to answer the question. I = E/R A car has a 12-volt battery. The engine has a resistance of 0.22 ohms. How many amps will be drawn from the battery when the...
- M Mathematics Solve 4 + 4 ( x - 2 ) = 2 ( x + 1 ) - x The question requires you to show your work...
- M Mathematics The frequency of two alleles in a gene pool is 0.19 (A) and 0.81(a). Assume that the population is in Hardy-Weinberg equilibrium. (a) Calculate the percentage of heterozygous...
- M Mathematics I need help understanding if I am doing GFC on polynomials with exponents right. The problem is 16p^4+4p^3 I got 4 as the GFC and wrote out the equation as 4p^2(4p^2+p) I get...
- M Mathematics Hugh bought some magazines that cost $3.95 each and some books that cost $8.95 each. He spent a tot Let m represent the number of magazines and b represent the number of books....
- M Mathematics I m factoring trinomialsHow do you solve this one6x^2-x-40...
- M Mathematics Which could be the area of the base of the triangular prism?...
- M Mathematics Preparing A Picnic Is that picnic food safe to eat? That depends. At certain temperature ranges, some foods are breeding grounds for harmful bacteria. How can an exponential...
- M Mathematics Simplify 3(x-1) + 7. 0. 3x +4 b. 2x+3 c. 2x7 d. -4x + 5...
- M Mathematics In oregon, the mean annual rainfall in rockaway beach is 118.88 inches and the mean annual rainfall in falls city is 122.28 inches. which conclusion can you make using this information?...
Ответ:
Given:
The cost function C(t) = 45t + 95 where t is the number of hours purchased
To Find:
The amount of money a customer pays more for using the service for 5 hours than for 3 hours
Solution:
A customer has to pay $90 more to use the service for 5 hours than for 3 hours.
Calculation:
First, we find the cost of using the service for 3 hours, i.e., at t=3. We do this by substituting t=3 in the cost function C(t) = 45t + 95
C(t) = 45(3) + 95 = 230
Thus the cost for using the service for 3 hours is $230.
Next, we find the cost of using the service for 5 hours, i.e., at t=5. We do this by substituting t=5 in the cost function C(t) = 45t + 95
C(t) = 45(5) + 95 = 320
Thus the cost for using the service for 5 hours is $320.
The difference in the two prices is $(320-230) = $90
So, a customer has to pay $90 more to use the service for 5 hours than for 3 hours.