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Lisa [10]
3 years ago
15

Here are the heights in inches of 10 professional basketball players: 66,74,76,77,78,79,80,80,82,84. The means of these heights

is 77.6 inches. Does this set have an outlier and, if so, how does removing it affect the mean?
Mathematics
1 answer:
Lesechka [4]3 years ago
7 0

Answer:

heights are:

66, 74, 76, 77, 78, 79, 80, 80, 82, 84

The mean is: 77.6 inches

Step-by-step explanation:

removing 66 will make the mean increase to 78.9  

The set has 66 as an outlier and removing it increases the mean by about 1.3 inches.

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Bruce walks 34 mile in 15 hour. What is his speed in miles per hour?
erastova [34]

Answer:

S=D/T

34/15=2.26 mph

Step-by-step explanation:

3 0
3 years ago
Probability With a Pair of Dice: Find the probability of rolling the difference of 1.
ra1l [238]

Answer:

there are 10 possibilities out of 36, which is 27.8%, or a chance of 1 in 3.6

Step-by-step explanation:

5 0
3 years ago
A scuba diving company currently charges $100per dive. On average, there are 30 customers per day. The company performed a study
Semenov [28]

A. Total Revenue (R) is equal to price per dive (P) multiplied by number of customers (C). We can write R=PC.

Per price increase is $20. So four price increase is $20*4=$80. Hence, price per dive is 100+80=$180.

Also per price increase, 2 customers are reduced from 30. For 4 price increases, 4*2=8 customers are reduced. Hence, total customers is 30-8=22.

So Total Revenue is:

R=180*22=3960


B. Each price increase is 20. So x price increase is 20x. Hence, new price per dive would be equal to the sum of 100 and 20x.

Also per price increase, customers decrease by 2. So per x price increases, the customer decrease is 2x. Hence, new number of customers is the difference of 30 and 2x.

Therefor we can write the quadratic equation for total revenue as the new price times the new number of customers.

R=(100+2x)(30-2x)=-40x^{2}+400x+3000


C. We are looking for the point (x) at which the equation modeled in part (B) gives a maximum value of revenue (y). That x value is given as x=-\frac{b}{2a}, where a is the coefficient of x^{2} and b is the coefficient of x. So we have,

x=-\frac{b}{2a}=- \frac{400}{(2)(-40)}=5

That means, the greatest revenue is achieved after 5 price increases. Each price increase was 20, so 5 price increase would be 5*20=100. So the price that gives the greatest revenue is 100+100=200.

ANSWERS:

A. $3960

B. R=-40x^{2}+400x+3000

C. $200

4 0
3 years ago
Plz help me I need tu turn this is by midnight!!
expeople1 [14]

Answer:

The last answer.

Step-by-step explanation:

It looks to be the correct answer because for the one above you can't simplify 27 by 5.

4 0
3 years ago
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What is the measure of XYZ?
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Answer:

Step-by-step explanation:

4 0
2 years ago
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