Answer:
$14.80
Step-by-step explanation:
So it looks pretty easy, all you have to do is add all the numbers up and multiply them by .2 or 20% which should get 20% of the overall bill
When multiplying a whole number by a fraction, put the whole number as a fraction over one. 9/1 times 3/4. When multiplying fractions, you multiply straight across. 9(3)=27 and 1(4)=4. The new fraction is 27/4.
Total frequency = 56.
Total fx = 1717
midpoint of 45-49 = 47
Mean of the data = 30.7
Median of the data = 31.3
Mode of the data = 32.5
<h3>What is Mean?</h3>
A measure of central tendency (also referred to as measures of centre or central location) is a summary measure that attempts to describe a whole set of data with a single value that represents the middle or centre of its distribution.
Here, total frequency ∑f = 5+7+9+11+8+7+5+4
= 56 (option B)
Total fx or ∑fx = 12X4 + 17X5 + 22X7 + 27X8 + 32X11 + 37X9 + 42X7+ 47X5
= 48 + 85 + 154 + 216 + 352 + 333 + 294 + 235
= 1717 (option B)
The midpoint of the score 45-49 = (45 + 49)/2
= 47 (option B)
Mean of the data = ∑fx/ ∑f
= 1717 / 56
= 30.7 (option D)
Median of the data = 31.3 (option A)
Mode of the data = 32.5 (option B)
Thus, Total frequency = 56.
Total fx = 1717
midpoint of 45-49 = 47
Mean of the data = 30.7
Median of the data = 31.3
Mode of the data = 32.5
Learn more about Central Tendency from:
brainly.com/question/13606190
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Answer:
38,400 for X
25,600 for Y
Step-by-step explanation:
X got 60% of 80% of 80,000 votes, so ...
80,000·0.80·0.60 = 38,400
X got 38,400 votes.
__
Y got 40% of 80% of 80,000 votes, so ...
80,000·0.80·0.40 = 25,600
Y got 25,600 votes.
141.12 pounds
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