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nirvana33 [79]
3 years ago
12

On a team’s opening day, fans in a baseball stadium were asked how many home games they plan to attend this season. The histogra

m shows the results. How many fans plan on attending at least than 20 games?
A) 32
B) 25
C) 17
D) 8

Ms. Donahue uses 4 essays as the basis for her grading. Each essay counts as a percent of the final average.

Essay 1 10%
Essay 2 15%
Essay 3 25%
Essay 4 50%

Joel had the following scores for his work: Essay 1, 85; Essay 2, 90; Essay 3, 80; and, Essay 4, 100.
What is Joel's expected final average?
A) 86
B) 89
C) 90
D) 92

Mathematics
2 answers:
In-s [12.5K]3 years ago
5 0

The Answer to the first one was 25 not 32

inn [45]3 years ago
5 0

<em>Assuming the question wants to know how many fans plan on coming to </em><em>atleast</em><em> 20 games,</em>

You look at the histogram, sum up the number of fans greater than x=20, <em>that is the last 4 bars</em>.

These are 15+12+4+1=32

Hence, A is the correct answer.


<em>For 2nd question, it is a </em><em>weighted average</em><em>, not a normal average. We need to multiply each score by the percentage it is worth and then divide by the total percentage. We have,</em>

Expected final average (or weighted average) = \frac{(85*0.1)+(90*0.15)+(80*0.25)+(100*0.5)}{0.1+0.15+0.25+0.5} \\\frac{92}{1}\\ 92 percent

Hence, D is the correct answer.


ANSWER:

First Question: A

Second Question: D

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The proposed figures have volume and area (rounded to the nearest unit) as follows:

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