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slava [35]
4 years ago
6

If alexis types 300 words in 5 minutes with 5 errors, what is her typing speed?

Mathematics
2 answers:
monitta4 years ago
4 0
Her typing speed is 3 words a second.
hodyreva [135]4 years ago
3 0
300 divided by 5 = 60 words per minute. minus 5 = 55 times 5= 275 wpm without mistakes

If that helps mark this answer as the brainliest! -procklownyt
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M, or slope, is needed to define if a set of lines are parallel or not.
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144 is what percent of 260​
Aleks04 [339]
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Suppose that the length of a phone call in minutes is an exponential random variable with parameter λ = 1/ 8. If someone arrives
Elis [28]

Answer:

a) P=0.535

b) P=0.204

c) P=0.286

Step-by-step explanation:

The exponential distribution is expressed as

F(x>t)=e^{-\lambda t}

In this example, λ=1/8=0.125 min⁻¹.

a) The probability of having to wait more than 5 minutes

F(x>5)=e^{-0.125*5}=e^{-0.625}=0.535

b) The probability of having to wait between 10 and 20 minutes

F(1020)=e^{-0.125*10}-e^{-0.125*20}\\\\F(10

c) The exponential distribution is memory-less, so it is independent of past events.

If you have waited 5 minutes, the probability of waiting more than 15 minutes in total is the same as the probability of waiting 15-5=10 minutes.

F(x>15|t^*=5)=F(x>15)/F(x>5)=\frac{e^{-0.125*15}}{e^{-0.125*5}}=e^{-0.125*(15-5)}\\\\ F(x>15|t^*=5)=e^{-0.125*(10)}=F(x>10)=0.286

5 0
3 years ago
Suppose that scores on a particular test are normally distributed with a mean of 110 and a standard deviation of 20. What is the
qaws [65]

Answer:

The minimum score needed to be in the top 2% of the scores on the test

is  n = 10,00,000

Step-by-step explanation:

<u><em>Step(i)</em></u>:-

Mean of the Population = 110

Standard deviation of the Population = 20

The estimated error = 2% = 0.02

<u><em>Step(ii)</em></u>:-

The estimated error is determined by

                        E = \frac{S.D}{\sqrt{n} }

                       0.02 = \frac{20}{\sqrt{n} }

               ⇒ \sqrt{n} = \frac{20}{0.02} = 1000

Squaring on both sides, we get

                   n = 10,00,000

The minimum score needed to be in the top 2% of the scores on the test

is  n = 10,00,000

8 0
3 years ago
Select the choice that translates the following verbal phrase correctly to algebra: the product of k and m
UkoKoshka [18]
You are right. It is the first one :)
7 0
3 years ago
Read 2 more answers
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