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Mnenie [13.5K]
3 years ago
15

Find the mean and the mean average height.

Mathematics
1 answer:
-BARSIC- [3]3 years ago
8 0

Answer:

a.) mean=200.3

b.) 210 cm

Step-by-step explanation:

a.) We are given the heights and their frequency. We can make a new set:

198, 199, 199, 199, 200, 200, 201, 201, 201, 201, 201, 202, 202

Now find the mean. The mean is found by adding all the numbers in the set, then dividing the total by the number of terms in the set. Add:

198+199+199+199+200+200+201+201+201+201+201+202+202=2604

Now count the terms. There are 13 terms. Divide the total by the number of terms:

\frac{2604}{13}= 200.3

The mean is 200.3.

b.) Use random values like 200, 198 etc. and add them to the total of the last set, then divide by 14 instead of 13 (because there is a new player). Do this until you get a mean of 201 with the new height:

2604+210=2814\\\\\frac{2814}{14}= 201

For the new mean to be 201 cm, the new player has a height of 210 cm.

Finito.

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The sign that would make the statement true is the division sign which would then make the full expression, (3 × 7) ÷ 21 = 1.

<h3>How to find the sign?</h3>

The statement given is (3 × 7) 21 = 1. There is therefore a need to find the sign that would be between the brackets and "21" which would lead to the answer being 1.

The brackets have to be solved first according to the PEMDAS rule which calls for parenthesis being solved first.

Solving the expression in the brackets gives:

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We therefore need a sign that when related to 21 would give the result, 1.

The only sign that can relate 21 to 21 such that the answer would be 1, is division:
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In conclusion, the sign that would make the statement true is a division sign.

Find out more on mathematical signs at brainly.com/question/24034494

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Mike's grandmother opened a savings account in Mike's name and deposited some money into the account. The account pays an annual
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