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saveliy_v [14]
3 years ago
6

My friend Harribo came into school one day and said all his plums had died when his granddad had brought them to St Pancras stat

ion ... If Harribo had grown 9 plum trees for 52 weeks (and all the plum trees were still growing) how many plum trees did Harribo's granddad kill when he de-rooted them and jammed them on St Pancras Station?
Mathematics
1 answer:
maw [93]3 years ago
6 0
His granddad killed none because it say all of the plum trees are still growing and it said plums died not the trees
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70+85=155

So measure of ZX is equal to 155 degrees
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Mark did 2/5 of a job and Alan did 1/3 of the remainder. The fraction of the job left undone
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Find the equation of the line.
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n HP laser printer is advertised to print text documents at a speed of 18 ppm (pages per minute). The manufacturer tells you tha
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Answer:

0.321 is the probability that their mean printing speed of the sample is greater than 17.99 ppm.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 17.39 ppm

Standard Deviation, σ = 4.25 ppm

Sample size = 11

We are given that the distribution of printing speed is a bell shaped distribution that is a normal distribution.

Formula:  

z_{score} = \displaystyle\frac{x-\mu}{\frac{\sigma}{\sqrt{n}}}  

P(printing speed of the sample is greater than 17.99 ppm.)  

P(x > 17.99)  

P( x > 17.99) = P( z > \displaystyle\frac{17.99-17.39}{\frac{4.25}{\sqrt{11}}}) = P(z > 0.468229)\\\\P( z > 0.468229) = 1 - P(z < 0.468229)

Calculating the value from the standard normal table we have,

1 - 0.679 = 0321= 32.1\%\\P( x > 17.99) = 32.1\%

Thus, 0.321 is the probability that their mean printing speed of the sample is greater than 17.99 ppm.

8 0
4 years ago
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