Give the mean of the following probability distribution?

Mathematics

1 answer:

vodka [1.7K]2 years ago

8 0

Answer:

Step-by-step explanation:

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Two numbers have a difference of 0.7 and a sum of 1. what are the numbers?

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<span>In order to determine the value of the numbers, we can set up algebraic equations to solve. For this case, we need to set up two equations since we have two unknown numbers. We do as follows:
let x = first number and y = second number
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x - y = 0.7
Equation 2 - the numbers have a sum of 1
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Solving for x and y via substitution method,
x - y = 0.7
(1-y) - y = 0.7
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The number of hours Layla worked each week for the first eight weeks of summer break are recorded below.

Rainbow [258]

Answer: The value of the center increases and the distribution has a smaller spread.

Step-by-step explanation:

Re - arranging the first value in ascending order , we have :

12 ,14, 16 , 19, 21 , 22 , 28 , 32

Median = 19 + 21 / 2

= 40/2

= 20

Also calculating the standard variation in order to know the spread , we need to first of all calculate the mean