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2 years ago

Calculate the variance for the following population of N = 5 scores: 2, 13, 4, 10, 6

Mathematics

1 answer:

AnnyKZ [126]2 years ago

4 0

Answer:

Step-by-step explanation:

(1) Get the mean: (2 + 13 + 4 + 10 + 6) / 5 = 7

(2) Variance Formula: Σ(x-mean)^2)/N

-> (2-7)^2 + (13-7)^2 + (4-7)^2 + (10-7) ^2 + (6-7)^2

= 16

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Ben made a four digit number with the numbers 7,4,3,9. The number was smaller than 4 and bigger than 1. The 7 cannot go in the t

victus00 [196]

3.479 is the answer

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2 years ago

Andrew has a cell phone plan that provides 300 free minutes each month for

Mekhanik [1.2K]

Answer:

Andrew has a cell phone plan that provides 300 free minutes each month for a flat rate of $19. For any minutes over 300, Andrew is charged $0.39 per minute. Let x be the number of minutes Andrew uses per month and f(x) be the charges based on Andrew's cell phone plan. If then If then first 300 minutes are free and each minute of next (x-300) minutes costs $0.39, therefore Hence, { 19 + 0.39(x - 300), x > 300

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2 years ago

A landscape plan includes a rectangular flower bed that is surrounded the wood planks. In the drawing, the rectangular flower be

True [87]

Step-by-step explanation:

we have

length =8in

breadth =6in

since . The length and width of the actual flower bed will be 24 times larger than the length and width in the drawing.

new

length=8×24=192in

breadth =6×24=144in

(b) What is the perimeter of the actual flower bed ? Show your work.

answer:the perimeter of the actual flower bed =2(l+b)

 =2(l+b)=2(192+144)=672in

(a) What is the perimeter of the drawing? Show your work

answer : the perimeter of the drawing

=2(8+6)=96in

(c) What is the effect on the perimeter of the flower bed with the dimensions are multiplied by 24? Show your work

perimeter of flower bed /perimeter of drawing

=96/672=1/7

<h3>perimeter of drawing is increased by 7times of perimeter of flower bed</h3>

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2 years ago

Read 2 more answers

A donation center had filled up 44 small bins with canned food with each bin containing 24 cans. They plan to send the cans out

Valentin [98]

Each food bank would receive 264 cans.

44 Bins with 24 cans. 44•24= 1,056

n= (44•24) / 4
n= 1,056 / 4
n= 264 cans per food bank

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3 years ago

Name:

Vlad [161]

Answer:

115

Step-by-step explanation:

59.50-30

=29.5

29.5/0.25=115

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2 years ago