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Doss [256]
2 years ago
13

A true-false quiz with 10questions was given to a statistics class. Following is the probability distribution for the score of a

randomly chosen student. Find the mean score and interpret the result. Round the answers to two decimal places as needed.
x 5 6 7 8 9 10
Px 0.06 0.12 0.33 0.29 0.13 0.07
Send data to Excel
1). The mean is____.
2). If we were to give this quiz to more and more students, the mean score for these students would approach ___.
Mathematics
1 answer:
SSSSS [86.1K]2 years ago
3 0

Using the mean <u>formula and it's interpretation</u>, it is found that:

1. The mean is 7.52.

2. If we were to give this quiz to more and more students, the mean score for these students would approach 7.52.

The mean of a discrete distribution is given by the <u>sum of each outcome divided by it's respective probability</u>.

Hence, in this problem, according to the <u>distribution given</u>, the mean is:

E(X) = 5(0.06) + 6(0.12) + 7(0.33) + 8(0.29) + 9(0.13) + 10(0.07) = 7.52

The mean is 7.52.

The <em>interpretation </em>is that over many trials, the mean would approach 7.52.

A similar problem is given at brainly.com/question/24855677

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3 years ago
Ellen planted 1/5 of her entire garden on Friday, 2/15 of her garden on Saturday, and 3/10 of the garden on Sunday. What fractio
xxMikexx [17]

Answer:

19/30

Step-by-step explanation:

1/5 + 2/15 + 3/10

We need the LCD of 5, 15, and 10.

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1/5 + 2/15 + 3/10 =

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3 years ago
Which number line represents the solution set for the inequality 2x – 6 ≥ 6(x – 2) + 8?
vovangra [49]

Answer: x≤ -0.5

Step-by-step explanation:  Graph the two lines or solve for x:

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2x – 6 ≥ 6x – 12 + 8

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The number line is anything less than or equal to - 1/2

Or one can plot each side of the inequality and note the interception point (x = -(1/2)).

4 0
3 years ago
Which of the following properties completes the proof?
Tresset [83]

The subtraction property of inequality can be used to proof that x = 7 from  x + 8 = 15

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more variables and numbers.

Given that x + 8 = 15

Hence:

x + 8 - 8 = 15 - 8 (subtraction property of inequality)

x = 7

The subtraction property of inequality can be used to proof that x = 7 from  x + 8 = 15

Find out more on equation at: brainly.com/question/2972832

#SPJ1

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2 years ago
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Answer:

AMY

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BMX

Step-by-step explanation:

I took the assignment

3 0
3 years ago
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