# Find the probability that at most 5 defective bolts will be given found in a box of 200 bolts if it is known that 2 percent of such bolts are expected to be defective . ( you may take the distribution to be Poisson :,e-4=0.0183)

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Find the probability that at most 5 defective bolts will be found in a box of 200 bolts if it is known that 2 per cent of such bolts are expected to be defective .(you may take the distribution to be Poisson; e-4= 0.0183).

Posted on Nov 15, 2010

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### If the supply equation is given as P Qs = -200 + 10P, the price elasticity of supply between R40 and R50, calculated using the arc elasticity of demand, is …

Think this is what the question is asking but not 100 percent sure . What does your text book say ?
First, apply the formula to calculate the elasticity as price increases from R40 at point A to R50 at point B
% change in price quantity PQs1 - PQs2 / (PQs1+PQs2)/2
% change in price = p1 - p2 / (p1 + p2)/2

Price elasticity of supply ========
% change in supply = 300 - 200 / (300+200)/2
100/250 =.4 becomes 40 %
% change in price = 50 -40 /(50+40)/2
10/45= .222 as % is 22.22 %
elasticity = % change in supply / % change in price
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My formula came from below

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### 7/200 greater than or less than 2/5

There are probably several ways to do this question.

This is the first one that came to mind. Is it easier to make 2/5 an equivalent in terms of 200 or is it easier to make 7/200 an equivalent in terms of 5. I don't like fractions or decimals, so let's go with the first one.

To make it easier to see, I'm going to re-write the equation

2 = x
--- -----
5 200

200/5 = 40 so we are multiplying 5 by 40 to get 200 in the denominator. So we have to multiply 2 by 40 in the numerator to get the equivalent fraction.

Now we have

2 80
--- = -----
5 200

Since 80/200 is equal to 2/5, we can now compare 80/200 with 7/200.

Back to the original question, 7/200 is less than 80/200.

Sorry for being so verbose. I just wanted to explain all my steps;)

Good luck,

Paul

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### What percent in any number is 5 percent?

5% of any number is one-twentieth of that number. 5% of 100 is 5. 5% of 200 is 10. 5% of 1000 is 50.

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Portfolios with more than one asset: Given the returns and probabilities for the three possible states listed here, calculate the covariance between the returns of Stock A and Stock B. For convenience, assume that the expected returns of Stock A and Stock B are 11.75 percent and 18 percent, respectively.

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### After entering *#3646633#, I had given assert

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### Percent to chemistry problems.

Hello

You should ask a question, we cannot guess what you want.

Percent means per 100 or 1/100. So 75% = 75/100 or 0.75. Here are some exemples of percent calculations with %

Percentage (5% of 250)

250 [x] 5 [2nd] % [=] gives 12.5

Ratio (Ratio of 250 to 5)
250 [/] 5 [2nd] [%] [=] gives 5000.

250 [+] 5 [2nd] [%] [=] gives 262.5

Discount (5% discount of 250)
250 [-] 5 [2nd][%] [=] gives 237.5

Some percentages and decimal equivalents
1 = 100% ; 2 = 200%, 3=300%
0.5 = 50%
0.4 =40%
0.1 = 10%
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1/4 = 0.25 = 25%
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From CASIO FAQS:

Why do I get the wrong answer when doing a percent calculation?

Make sure that you are following the correct procedure.
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Subtract 10%: 200 [×] 10 [%] [-]

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### BINOMIAL DISTRIBUTION

Hello,
Let us start with a review of the formula for the binomial distribution
f(r;n,p)=n!/(r!(n-r)!)x(p^r)x(1-p)^(n-r)

But n!/(r!(n-r)!)=(nCr) you get
f(r;n,p)= (nCr)x(p^r)x(1-p)^(n-r)

Exemple : n=25, r=6, p=0.7

f(6;25,0.7)= 25 [PRB] [-->] 6 [ x ] {0.7[ ^] 6 }[ x ]{0.3[ ^ ]19}

The arrow means a horizontal scroll once to select the (nCr) function. [ x ] stands for the multiplication sign.
[ ^] is the raise to the power key
The { } are used here as parentheses to make formula legible.

Hoe it helps

Hope it helps

Hope it helps.

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