![delaneyjane1599](/avatars/32568.jpg)
delaneyjane1599
16.07.2019 •
Mathematics
How many shelves will display 2 cars if 8 of the shelves each display 1 car
Solved
Show answers
More tips
- P Philosophy Agnosticism: Opinion or Belief?...
- S Style and Beauty How to choose the best mascara for your eyelashes...
- F Food and Cooking Discover Delicious Recipes You Can Make with Ground Meat...
- C Computers and Internet Google Search Tips and Tricks: Everything You Need to Know...
- S Science and Technology Why is there no gravity on other planets?...
- L Leisure and Entertainment How to Properly Wind Fishing Line onto a Reel?...
- L Leisure and Entertainment How to Make a Paper Boat in Simple Steps...
- T Travel and tourism Maldives Adventures: What is the Best Season to Visit the Luxurious Beaches?...
- H Health and Medicine Kinesiology: What is it and How Does it Work?...
- O Other How to Choose the Best Answer to Your Question on The Grand Question ?...
Answers on questions: Mathematics
- M Mathematics 15 points! if a = 2, and b = 4, what is (b + a) - ab + 5a?...
- M Mathematics If p-1 is a factor of p⁴+p²+p-k what is the value of k...
- M Mathematics Has anyone finished algebra 1-b on edg?...
- M Mathematics Give answer asap (show steps) use a calculator to find an angle theta for which tan theta = 2. round to the nearest hundredth. i don t have a graphing calculator and i don...
- M Mathematics Solve the equations by combining like terms. show all the steps. 2(2x - 4) + x = 7 8 = 3(3x + 8) − x...
- M Mathematics Round 0.625 to the nearest whole number...
- M Mathematics What is the solution to the system of equations? y = 1/3x - 102x + y = 4a) (-8,6)b) (-6, 16)c) (6,-8)d) (16, -6)...
- M Mathematics An angle measures 45 degree . what is the measure of its complement?...
- M Mathematics What is the y-intercept for y+2= -3/4(x+4)...
- M Mathematics 70 14. the population of a town is 18,922 people. each year the population increases by 3%. what will the town s population be in 17 years? round your answer to the nearest...
Ответ:
Ответ:
Ответ:
a) 35%
b) 19 minutes
Step-by-step explanation:
The graph for this question is attached in the image below.
Part a) Percent of calls that lasted 30 minutes or more
As seen in the graph, the x-axis represent the duration of the call in minutes and y-axis represent the cumulative frequency of the calls.
From the graph we can see that the cumulative frequency against the point 30 minutes is about 65%. This means, 65% of the calls lasted for less than 30 minutes.
Since, out of 100%, 65% of the calls lasted for less than 30 minutes, the percentage of call that lasted for 30% or more would be:
100% - 65% = 35%
This means, 35% of calls lasted 30 minutes or more.
Part b) The interquartile range (IQR) of the distribution.
Interquartile range is defined as the difference of the 3rd Quartile and the 1st Quartile.
3rd Quartile is the point, below which 75% of the data values are present.
1st Quartile is the point, below which 25% of the data values are present.
So, from the cumulative frequency graph we have to look for the values on time axis against the cumulative frequency of 25% and 75%.
The amount of time against 25% cumulative frequency is approximately 13 minutes.
So, 1st Quartile = 13 minutes
The amount of time against 75% cumulative frequency is approximately 32 minutes.
So, 3rd Quartile = 32 minutes
Therefore,
IQR = 3rd Quartile - 1st Quartile
IQR = 32 - 13
IQR = 19 minutes
The interquartile range (IQR) of the distribution is 19 minutes.