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Juliette [100K]
3 years ago
9

Suppose that a recent poll found that 50 ​% of adults in a certain country believe that the overall state of moral values is poo

r. If a survey of a random sample of 15 adults in this country is conducted in which they are asked to disclose their feelings on the overall state of moral​ values, complete parts​ (a) through​ (e) below.
Mathematics
1 answer:
Bumek [7]3 years ago
4 0

Answer: 3.75

Step-by-step explanation:

P=0.50, n=15

np= 0.5x15 gives 7.5

n(1-p)= 15x(1-0.5)=7.5

Both are greater than 5

Then Mean, u=np;15x0.5=7.5

Standard deviation, √np(1-p)

15x0.5(0.5)= 3.75

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Write a division problem that has a 3 digit dividend and a divisor between 10 and 20
posledela
Dividend means the number to be divided, the divisor is the number you divide with. 

It sounds like you just need to divide a three-numbered integer by a number between 10 and 20.

Example:         Dividend -->  333÷16  <-- Divisor
5 0
3 years ago
you deposit the same amount of money in the bank each month. you deposit a total of $900 in one year. how many months does it ta
bazaltina [42]

Answer:

The answer is 30 months

Step-by-step explanation:

900 divided by 12 months = 75/month

2250 divided by 75 each month = 30 months

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Which of these points lies on the graph of the equation x − 12 = y?
lesya692 [45]

Answer: (4, 8)

Step-by-step explanation:

(4,8)

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3 years ago
For an acute angle θ, the equation sin (θ) = cos (7°)is true. What is the value of θ?
8_murik_8 [283]

Answer:

  θ = 83°

Step-by-step explanation:

For acute angles, the sine of an angle is the cosine of its complement, and vice versa.

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  sin(θ) = cos(90° -θ) . . . . relation between sine and cosine

  sin(θ) = cos(7°) . . . . . . . . given

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5 0
2 years ago
PLAYSTOP6The volume of the solid iscubic feet. Use the formula V = Bh. All angles are 90°.9 ft.6 ft.ft.3 ft.2 ft.2ft.
ira [324]

Volumen of A Solid

Given a solid with a shape of a constant base B and height H, the volume is:

V = BH

The height of the solid is 1 1/4 ft. We need to calculate the area of the base.

The base consists of a larger rectangle from which has been taken a smaller rectangle.

The larger rectangle has dimensions of 9 ft by 6 ft, thus its area is:

A1 = 9 ft * 6 ft = 54 square ft

The smaller rectangle has dimensions of 2 1/2 ft by 4 ft.

The second dimension was calculated as the difference between 9 ft and 2 ft plus 3 ft. (9 ft - 3 ft - 2 ft = 4 ft).

The area of the smaller rectangle is:

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B = 44 square feet.

Now for the volume:

V = 44 square feet * 1 1/4 feet

Again the mixed fraction is converted to a single fraction:

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3 0
1 year ago
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