2 years ago

A person makes 300 dollars a month babysitting. If they

Mathematics

1 answer:

Keith_Richards [23]2 years ago

7 0

Answer:

They will save $90 each month

Step-by-step explanation:

300*30%

300*.3

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Suppose x is a normally distributed random variable with μ = 50 and Ϭ = 3. Find a value of the random variable, call it x0, such

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Answer:

Step-by-step explanation:

Given that X is N(50,3)

So whenever we want score for x, we can convert this to Z and use std normal distribution table.

The formula for conversion is

$Z = \frac{x-50}{3}$

Using this we can find out the corresponding scores

a) $P(X\leq X_0) = 0.8413$

Z value = 1 and hence

$X_o = 50+1(3) = 53\\$

b) $P(x > x0) = 0.25$

$z=0.5-0.0987=0.4013\\X0= 50+3(0.4013)\\= 51.2039$

c) $P(x > x0) = 0.95\\z=2\\X_0 = 50+6 =56$

d) $P(41 ≤ x < x0) = 0.8630 \\P(-3 ≤ Z$

e) 10th percentile is $50-1.28(3) =46.16$

f) This is 99th percentile

= $50+2.33(3)\\= 56.69$

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2 years ago

Can someone please help me??? I’ll mark brainlist!!!

Tema [17]

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Step-by-step explanation: 20% off 200 is 160 and 200-160=40 so it’s the same

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2 years ago

Which statement below is true regarding these two polygons? A. ; 10 : 1.2 B. The polygons are not similar. C. ; 5 : 1.2 D. ; 5 :

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<span>B. The polygons are not similar.</span>

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EastWind [94]

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Step-by-step explanation:

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3 years ago

How many days will it take for me to earn $899.00,getting payed $9 per hour, if I only work 3 hours a day

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Step-by-step explanation:

Divide $899.00 by 27 days.

Sorry if Im wrong

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