Question 9,
1 answer:
The completed table for the number of text distribution including the frequency and relative frequency for teens and adult is given below.
The side-by-side graph is attached in the picture below.
Few number of texts are sent by larger percentage of adults while larger number of text are sent by a larger percentage of teens
TEENS :
Number of TEXTS __Frequency __ Relative freq
None ____________ 13 ___ 13/658 __0.020
1-10______________147 __147/658 __ 0.223
11-20 ____________ 64 __ 64/658 ___0.097
21-50 ___________ 123__ 123/658___ 0.187
51-100___________ 122__ 122/658___ 0.185
100 + ___________ 189___189/658___0.287
Total frequency of teens = (13+147+64+123+122+189) = 658
ADULT :
Number of Texts __ Frequency ___ Relative frequency
None ___________ 171 ____171/1938 = 0.088
1-10 ____________ 985 ___985/1938= 0.508
11-20 ___________246 ___ 246/1938 = 0.127
21-50 __________ 242 ___ 242/1938 = 0.125
51-100___________131 ____ 131/1938 =0.068
100 + ___________163 ____163/1938=0.084
Total frequency of adults = (171+985+246+242+131+163) = 1938
Relative frequency = frequency / total frequency
The side - by - side relative is attached below :
From the side-by-side graph, the percentage of adults who send few text (0 - 20) are more than teens while the percentage of teens who send many text per day (21 - 100+)are more than Adults.
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Answer:
6.5%
Step-by-step explanation:
You can find the tax rate by finding the percentage that the initial price increased by.
First, subtract the initial price from the price after taxes.
509.07 - 478 = 31.07
Knowing this we can find the tax rate using an equation like this.
Now we substitute in our values.
With X being the tax rate, we cross multiply both fractions.
3107 = 478x
From here, we solve for x by dividing 3107 by 478.
x = 6.5
Therefore the tax rate is 6.5 percent.
(Note that when you are trying to find the tax rate that you divide by the initial price before taxes to get the correct value.)