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VashaNatasha [74]
3 years ago
8

170 players 50% are boys. how many boys ?

Mathematics
2 answers:
Valentin [98]3 years ago
5 0
85
50% of 100=50
50% of 70=35
50+35=85
FinnZ [79.3K]3 years ago
3 0
50% means half so divide 170 by 2,
170/2=85
so there is 85 boys 
Hope this helped!!
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The mass of the eggs laid by a certain breed of hen is a normally distributed random variable with mean 0.06kg and standard devi
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a (i) The number of standard size is 288 eggs

a (ii) The number of medium size is 1,476 eggs

a (iii) The number of large size is 36 eggs

b (i) The expected profit made from selling the standard size is Gh¢43.2

b (ii) The expected profit made from selling the medium size is Gh¢516.6

b (iii) The expected profit made from selling the large size is Gh¢16.2

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standard deviation (std) of the distribution, d = 0.009 kg

number of the samples, n = 1800 eggs

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(<em>the </em><em>standard size</em><em> is 1 standard deviation below the mean</em>)

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(ii) Find the position of "Between 0.052 kg and 0.075kg (medium size)":

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(<em>the </em><em>medium size</em><em> is between 1 std below the mean and 2 std above the mean</em>)

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(iii) Find the position of "Greater than 0.075 kg (large size)":

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(ii) The expected profit made from selling the medium size:

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Profit = 1476(0.8) - 1476(0.45) = Gh¢516.6

(iii) The expected profit made from selling the large size:

Profit = total revenue - cost of production

Profit = 36(0.9) - 36(0.45) = Gh¢16.2

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