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AleksandrR [38]

3 years ago

11

a sales person works 3 days per week. she earns 1/3 of her pay on monday and 1/4 on tuesday. how much of her pay does she earn o

n Wednesday???

1 answer:

vagabundo [1.1K]3 years ago

3 0

42 percent on wensday because 33 plus 25=58 and 58+42=100

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3 years ago

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Five

Step-by-step explanation:

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3 years ago

Let represent the number of tires with low air pressure on a randomly chosen car. The probability distribution of is as follows.

Sindrei [870]

Answer:

a) $P(X=3) = 0.1$

b) $P(X\geq 3) =1-P(X$

And replacing we got:

$P(X \geq 3) = 1- [0.2+0.3+0.1]= 0.4$

c) $P(X=4) = 0.3$

d) $P(X=0) = 0.2$

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And replacing we got:

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And the variance would be:

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And the deviation:

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Step-by-step explanation:

We have the following distribution

x 0 1 2 3 4

P(x) 0.2 0.3 0.1 0.1 0.3

Part a

For this case:

$P(X=3) = 0.1$

Part b

We want this probability:

$P(X\geq 3) =1-P(X$

And replacing we got:

$P(X \geq 3) = 1- [0.2+0.3+0.1]= 0.4$

Part c

For this case we want this probability:

$P(X=4) = 0.3$

Part d

$P(X=0) = 0.2$

Part e

We can find the mean with this formula:

$E(X)= \sum_{i=1}^n X_i P(X_i)$

And replacing we got:

$E(X) =0*0.2 +1*0.3+2*0.1 +3*0.1 +4*0.3= 2$

Part f

We can find the second moment with this formula

$E(X^2)= \sum_{i=1}^n X^2_i P(X_i)$

And replacing we got:

$E(X^2) =0^2*0.2 +1^2*0.3+2^2*0.1 +3^2*0.1 +4^2*0.3= 6.4$

And the variance would be:

$Var(X0 =E(X^2)- [E(X)]^2 = 6.4 -(2^2)= 2.4$

And the deviation:

$\sigma =\sqrt{2.4} = 1.549$

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3 years ago

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Vedmedyk [2.9K]

Answer:

15 boys in 3 groups

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Step-by-step explanation:

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Have an awesome day! :D

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2 years ago

1. Carly bought some tickets and some snacks and paid $34 from the Redhawk Rangers selling raffle tickets for $2 each

GaryK [48]

Answer:

$2(T) + $1.5(S) = $34

Step-by-step explanation:

Let:

tickets be represented by T

Snacks be represented by S

As total amount she paid is $34

The expression would be:

$2(T) + $1.5(S) = $34

i hope it will help you!

4 0

2 years ago

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