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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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We need to buy 4 spirals for every student. If we have 25 students, how many spirals should we order?
ozzi

Answer:

100

Step-by-step explanation:

4 spirals for 1 student. 4 x 25 to get the total number, and that equals 100

8 0
3 years ago
50 POINTS!!! jamie will choose between two catering companies for an upcoming party. company A chargers a set-up fee of $500 plu
Shtirlitz [24]

Answer:

60 guests

Step-by-step explanation:

We'll say that the number of guests is n.

We're looking for the n where both of these expressions are equal:

Company A (500 set-up fee, 25 for each guest)

500 + 25 * n

Company B (200 set-up fee, 30 for each guest)

200 + 30 * n

500 + 25n = 200 + 30n

Subtract 200 from both sides.

300 + 25n = 30n

Subtract 25n from both sides.

300 = 5n

We'll reverse the sides.

5n = 300

Divide both sides by 5.

n = 300/5 = 60

Thus, both companies are equal when n is 60, or when there are 60 guests.

5 0
3 years ago
Read 2 more answers
Express $0.\overline{5}$ as a common fraction in lowest terms.
andreyandreev [35.5K]
<h3>Answer:  5/9</h3>

=======================================================

Explanation:

0.\overline{5} means that the 5's go on forever because of that horizontal bar over top. So we can write it as 0.\overline{5} = 0.55555\ldots

The three dots indicate it goes on forever following that pattern.

Let

x = 0.55555....

Multiply both sides by 10 to move the decimal point 1 spot to the right

10x = 5.55555....

Notice how both x and 10x involve a decimal number such that we have a string of 5's going on forever. If we subtract the two equations, then 10x-x becomes 9x, while the (5.55555....) - (0.55555....) simplifies to 5. The decimal portions cancel out when we subtract since they line up perfectly. We're effectively subtracting 5-0 when we cross off the decimal portions.

After those subtractions, we're left with 9x = 5 which solves to x = 5/9 when you divide both sides by 9.

Use of a calculator should show that 5/9 = 0.555555.... to help confirm the answer. Your calculator may show the last digit to be a 6 instead of a 5, but this is due to rounding. Ideally you should have a string of infinitely many 5's, but the calculator can only how so many digits.

3 0
2 years ago
Triangle DBC is equilateral,<br>AB = AC. Work out the size of angle x. <br><br><br>Pls asap​
allochka39001 [22]

Answer:

x = 21º

Step-by-step explanation:

∆ ABC is isosceles therefor

Angles B and C are congruent

(180  - 18)/2 = 162/2 = 81º

------------------

∆ BCD is equilateral  therefor all angles are 60º

---------------------------

x = = 81 - 60

x = 21º

3 0
2 years ago
Please help !!! Need done asap
lisabon 2012 [21]
Is this like geometry or What 
6 0
3 years ago
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