The following data give the prices of seven textbooks randomly selected from a university bookstore. $93 $173 $107 $125 $56 $163 $144 a. Find the mean for these data. Calculate the deviations of the data values from the mean. Is the sum of these deviations zero? Mean = $ 123 Deviation from the mean for $173 = $ 0 Sum of these deviations = $ -433 b. Calculate the range, variance, and standard deviation. [Round your answers to 2 decimal places.] Range = $ Variance = Standard deviation = $ Click if you would like to Show Work for this question: Open Show Work LINK TO TEXT

Answers

Answer 1
Answer:

Answer:

Mean = $123

Standard deviation = 10190

Variance = 1698

Step-by-step explanation:

Mean=?

      = sum of all numbers/ Total numbers

    a  =  93+173+107+125+56+163+144 / 7  = 861/7 = $123

Standard deviation=?

we know that = Sqareroot [ Sum (y)²] / N

we need deviation:

=    x-a         =  y   ;    y²                

  = 93-123 = -30  ;   900

   =173-123 = 50  ;    2500

  =107-123  =  -16 ;   256

   =125-123  = 2   ;    4

   =56-123   =  -67 ;   4489

   =163-123  =  40  ;   1600

   =144-123   =  21   ;   441

Sum of y²            =   10190.

  = Square root [  10190 / 7 ]

  =  38.1

Variance = ?

        = Sum ( y)² / N-1

        =  10190 / ( 7-1)

       = 10190 /6

     = 1698


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Answers

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Step-by-step explanation:

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In second grade Eliza was given 500 from her grandparents this money was deposited into a savings account that earns 3% annual interest compounded quarterly find the account balance at graduation is there no other deposits or withdrawals in the account

Answers

Answer:

account balance at graduation is 674.17

Step-by-step explanation:

given data

deposit money P  =  500

interest rate = 3 % compounded quarterly

we take time period = 10 year ( 2nd grade to 12 grade)

solution

we apply here compound interest formula that is

amount = P * (1+(r)/(4))^(4t)      ..................1

put here value and we get

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Answer:

$694.63

Step-by-step explanation:

The formula is p(1+r/n)^tn. P, or the principal amount, is 500 dollars. R, or the rate as a decimal, is 0.03. N, or the number of times compounded yearly, is 4. T, or the time in years, is 11, since there are 11 years from grade 2 to grade 12. 12-2+1=11. Now, plug in the information given. 500(1+0.03/4)^4*11 = 500(1.0075)^44 = 694.63 dollars, rounded to the nearest cent.

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Answers

Answer:

Step-by-step explanation:

8x+2y-2

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Answers

Answer:

x>11

Step-by-step explanation:

x needs to be alone so subtract 16 on both sides, making the equation -8x > -88, next simply make x positive amd alone by dividing -8 on both sides, ending in the result of × > 11

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Answers

because both lines are parallel, if you add the 5x+5 to the 115 those would equal 180 degrees

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subtract 120 from both sides

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Okay so (5x+5)+115 is going to equal 180. 

1.) (5x+5)+115=180

The next steps is to isolate the x.

2.) 5x+120=180
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Then, you check your work by plugging in the numbers.
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Answers

Answer:

The expression will be 3(2^x) + 5

Step-by-step explanation:

In order to find the new expression, you have to let g(x) be the x :

f(x) = 3x + 5

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