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never [62]
3 years ago
12

A insurance office keeps track of the number of car insurance claims filed each day. Based on the data collected, it determines

that the following probability distribution applies: Number of Claims Probability 0 .25 1 .15 2 .25 3 .25 4 .10 a. What is the expected number of new claims filed each day
Mathematics
1 answer:
Ivenika [448]3 years ago
8 0

Answer:

The expected number of new claims filed each day is 1.8.

Step-by-step explanation:

We are given the following probability distribution:

P(X = 0) = 0.25

P(X = 1) = 0.15

P(X = 2) = 0.25

P(X = 3) = 0.25

P(X = 4) = 0.1

a. What is the expected number of new claims filed each day

Multiplication of each outcome by its probability, so:

E(X) = 0*0.25 + 1*0.15 + 2*0.25 + 3*0.25 + 4*0.1 = 1.8

The expected number of new claims filed each day is 1.8.

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Factor Completely: 100x2 - 1
fredd [130]

Answer:

d

Step-by-step explanation:

100x² - 1 ← is a difference of squares and factors in general as

a² - b² = (a - b)(a + b), thus

100x² - 1

= (10x)² - 1²

= (10x - 1)(10x + 1) → d

3 0
3 years ago
In the United States, the distribution of a female's height has a mean of 64 inches with a standard deviation of 3 inches. How m
inessss [21]

Answer:

The standard deviations is \frac{-5}{3}  

Step-by-step explanation:"

Given mean female height = 64 inches and standard devaiton = 3 inches and 69 inches tall is Sally.

We know the distance of a data point from:

Z =\frac{64-69}{3} = \frac{-5}{3}

So the standard deviations is \frac{-5}{3}  

8 0
3 years ago
Help me with this pls
swat32

Answer:

180

Step-by-step explanation:

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4 0
3 years ago
How do you do number 2? Help please and thank you.
Dmitrij [34]

Answer:

{3,-1}

Step-by-step explanation:

m^2 -2m -3=0

What 2 numbers multiply to -3 and add to negative 2

-3* 1 = -3

-3 +1 =-2

(m-3) (m+1) =0

Using the zero product property

m-3 = 0  m+1 =0

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{3,-1}

6 0
4 years ago
Although five of John's answers were incorrect, 90% of his answers were correct. How many questions did John answer in all?
fiasKO [112]

Answer:

John answered 50 questions.

Step-by-step explanation:

Although five of John's answers were incorrect, 90% of his answers were correct.

This means that 5 is 100 - 90% = 10% of the total number of questions, n. So

0.1n = 5

n = \frac{5}{0.1}

n = 50

John answered 50 questions.

7 0
3 years ago
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