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emmasim [6.3K]
3 years ago
8

Lisa has collected data To find That the number of pages per book on a book shelf has normal distribution. What is the probabili

ty that a randomly selected book has fewer than 153 pages of the mean is 193 pages and the standard deviation is 20 pages? Use the empirical rule
Mathematics
1 answer:
Elis [28]3 years ago
7 0

soooo sory i dont have answer i will come back next time

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A line contains the points (3, -4) and (0, 2). What is the equation of this line in slope-intercept form?
Lera25 [3.4K]

Answer:

B. y = –2x + 2

Step-by-step explanation:

First, find the <em>rate of</em><em> </em><em>change</em><em> </em>[<em>slope</em>]:

-y₁ + y₂\-x₁ + x₂ = m

\frac{4 + 2}{-3 + 0} = -\frac{6}{3} = -2

In this case, the y-intercept of [0, 2] is ALREADY given to you, so we would not have to go further.

I am joyous to assist you anytime.

8 0
4 years ago
Which expression is equivalent to sqrt 120x?
adelina 88 [10]
The answer would be A) 2 sqrt 30x 
just took test:) brainly plz maybe but A is answer

4 0
4 years ago
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Is "x = 1" a function? if not please explain why.​
MrRa [10]

Answer:

x = 10

Step-by-step explanation:

x is not equal to 1 is equal to 10

you see 1 is equal to I. 2= II. 3= III. 4=IV etc. hope it HELPS

8 0
3 years ago
The time taken to complete a motorcycle race is normally distributed, with an average time (µ) of 2.5 hours and a standard devia
torisob [31]

Using the normal distribution, there is a 0.5398 = 53.98% probability that a randomly selected cyclist will take at least 2.45 hours to complete the race.

<h3>Normal Probability Distribution</h3>

The z-score of a measure X of a normally distributed variable with mean \mu and standard deviation \sigma is given by:

Z = \frac{X - \mu}{\sigma}

  • The z-score measures how many standard deviations the measure is above or below the mean.
  • Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.

The mean and the standard deviation are given, respectively, by:

\mu = 2.5, \sigma = 0.5

The probability that a randomly selected cyclist will take at least 2.45 hours to complete the race is <u>one subtracted by the p-value of Z when X = 2.45</u>, hence:

Z = \frac{X - \mu}{\sigma}

Z = \frac{2.45 - 2.5}{0.5}

Z = -0.1

Z = -0.1 has a p-value of 0.4602.

1 - 0.4602 = 0.5398.

0.5398 = 53.98% probability that a randomly selected cyclist will take at least 2.45 hours to complete the race.

More can be learned about the normal distribution at brainly.com/question/4079902

#SPJ1

3 0
2 years ago
If x= 27 and y= 54 then what does w equal
beks73 [17]
The answer is 81 because 27 x 3
4 0
3 years ago
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