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konstantin123 [22]
3 years ago
5

An instructor has given a short quiz consisting of two parts. for a randomly selected student, let x = the number of points earn

ed on the first part and y = the number of points earned on the second part. suppose that the joint pmf of x and y is given in the accompanying table. y p(x, y) 0 5 10 15 x 0 0.02 0.06 0.02 0.10 5 0.04 0.13 0.20 0.10 10 0.01 0.15 0.16 0.01 (a) if the score recorded in the grade book is the total number of points earned on the two parts, what is the expected recorded score e(x + y)? (enter your answer to one decimal place.) (b) if the maximum of the two scores is recorded, what is the expected recorded score? (enter your answer to two decimal places.)
Mathematics
1 answer:
Diano4ka-milaya [45]3 years ago
8 0
<span>To find the expected recorded score, we need to find the sum of (x + y) times P(x +y), which gives us 14.4. The expected recorded score goes through the same process, but we only use the maximum scores and this gives us 9.75</span>
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Step-by-step explanation:

Solution

According to remainder theorem, when f(x) is divided by (x+2), Remainder =f(−2)

f(x)=5x3+2x2−6x+12

f(−2)=5(−2)3+2(−2)2−6(−2)+12

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2 years ago
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2 years ago
Who started the problem correctly? The problem form is (-5) - (-1 3/4).
Veronika [31]

Answer:

Shane started the problem correctly

Step-by-step explanation:

We are given problem (-5) - (-1 3/4).

Mariah started the problem as (-5) + 1 - 3/4

Shane started the problem as (-5) + 1 + 3/4

We need to find who started the problem correctly.

The problem should be started by converting the mixed fraction into improper fraction i,e

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Now we will solve bracket by multiplying -1 with term inside the bracket i.e

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Let's compare both the procedures now:

Mariah:

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Therefore, Mariah did not start the problem correctly.

Shane:

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= -5 + \frac{7}{4}

= \frac{-13}{4}

Therefore, Shane started the problem correctly.

6 0
3 years ago
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