100 students take a course pass/fail. If they pass they get 4 points towards their GPA, if they fail they get 0. If 90 students pass, what is the mean and standard deviation (to 1 decimal) of the points earned?Mean: ________a0

Standard Deviation:________ a1

Answers

Answer 1
Answer: Formulas
Mean = total sum of points / # of data
[Stantard deviation] ^ 2 = {Sum of [every data - mean]^2 } / [number of data - 1]

Procedure:

Mean = total sum of points / # of data

Total sum of points = point of pass + point of fail

points of pass = 90*4 = 360
point of fail = 10*0 = 0
Total sum of points = 360

Number of data = 100

Mean = 360/100 = 3.6

[Stantard deviation] ^ 2 = {Sum of [every data - mean]^2 } / [number of data - 1]

[Sum of every data - mean]^2  = 90*[4 -3.6]^2 + 10* [0 - 3.6]^2 = 14.4 + 129.6 = 144

 [Stantard deviation] ^ 2 = [144]/[100-1] =144/99

Standar deviation = √(144/99) = 1.206



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If Timmy has 20 apples and John has 15. How many do they have in total?

Answers

Answer: 35

Step-by-step explanation: Simple math.

An ice chest contains 3 types of drinks: 10 apple juries 15 grape juices and 15 bottles of water what is the probability of getting a drink that does not contain fruit juice

Answers

Answer: (3)/(8)

Step-by-step explanation:

Given: An ice chest contains 3 types of drinks: 10 apple juries 15 grape juices and 15 bottles of water.

Total drinks= 10+15+15 = 40  (Total outcomes)

Number of drink that does not contain fruit juice = Number of bottles of water = 15  (Favorable outcomes)

The probability of getting a drink that does not contain fruit juice = (Favorable\ outxcomes)/(Total\ outcomes)

=(15)/(40)\n\n=(3)/(8)

So, the required probability = (3)/(8) .

there are 7 gray kittens. 2 kittens are black. how many fewer black kittens are there than gray kittens?

Answers

5 kittens, because seven gray kitties minis two black kitties equals five fewer black kitties!

Jaya is buying a new car that has aprice of $28,495. She is required to
pay a sales tax that is 6.25% of the
car’s price.
Which of the following estimates is
closest to the amount of sales tax Jaya
will pay for the car?
A. $1,200
B. $1,400
C. $1,800
D. $2,100

Answers

c. is the answer because 6.25% of 28495 is 1780.93

A piece of equipment is purchased for $18,000.00 and has a salvage value of $2,000.00.The estimated life is then years and the method of depreciation is straight-line. Shipping costs total $620.00 and installation costs are $590.00. The book value at the end of year 10 is....A.)$1,110.00

B)$2,110.00

C)$3,110.00

D)$2,000.04

HEEEELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP!!!! XD

Answers

Hello one of my favvvvv sons!
This is Accounting math, so congrats at being in college level math!
 Now let's solve this!  :)

The Book Value of an asset is the asset's cost minus the assets accumulated depreciation.
 Asset's costs:
           Purchase of equipment =  $18,000
           Shipping costs =  $620.00
           Installation costs =  $590.00
                                    
              Total = $19,210.00

Assets accumulated depreciation:

  depreciation per year=(Cost of equipment-Salvage Value) ÷ Estimated Useful Life = (18000 - 2000) ÷ 10 = $ 1,600 per anum (per year)

           Cost: $18,000
           Salvage Value: $ 2,000
           Estimated Useful Life:  10 years

 With this data, we can make the following chart provided below.
Looking at the chart we can conclude that hence, in the 10th year, the accumulated depreciation value is $ 16,000.

So the Book Value at the end of year 10 is...
an asset is the assets cost - the assets accumulated depreciation.
$19,210.00 - $16,000 = $ 3,210

Hope I helped! If you have any other questions or would like further explanation feel free to Pm me! Have a great day!!! :)

Please help me qwq In a reflection, what are corresponding angles?!

Answers

Answer:When two lines are crossed by another line (which is called the Transversal), the angles in matching corners are called corresponding angles. Example: a and e are corresponding angles. When the two lines are parallel Corresponding Angles are equal.