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exis [7]
4 years ago
8

A study conducted in July 2015 examines smartphone ownership by US adults. A random sample of people were surveyed, and the stud

y shows that of the men own a smartphone and of the women own a smartphone. We want to test whether the survey results provide evidence of a difference in the proportion owning a smartphone between men and women
Mathematics
1 answer:
blsea [12.9K]4 years ago
6 0

Answer:

Step-by-step explanation:

Im sorry i dont really know ur anwer.  Hope someone else can

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Activity 1: Directions: Write TRUE if the statement is true and FALSE if the statement is false.
LuckyWell [14K]

Step-by-step explanation:

1.The formula in finding the area of a circle is derived from the area of a parallelogram. It is false.

2. The area of a circle is πr² where r is the radius of the circle. It is true.

3. The area of a circle is equal to pi divided by the square of the radius. It is false.

4. The diameter of a circle is equal to twice its radius i.e. d = 2r. It is true.

5. If r = 2.1 m

Area of circle, A =  πr²

= 3.14 (2.1)²

= 13.85 m²

Henc,e this is the required solution.

5 0
3 years ago
Resssspooond quickkk
Doss [256]
The slope of the given line is -1/3. The perpendicular line's slope is the opposite reciprocal of the given line's slope. So, the perpendicular line's slope is 3. Then we have slope intercept form y=mx+b

y=3x+b
We don't know "b" which is the y-intercept for this equation, but we have the coordinates (6, -1). We can use these to find the slope by plugging them into the equation.

-1=3(6)+b
-1=18+b
-1-18=18+b-18
-19=b
So, the resulting y-intercept is -19.

The final perpendicular equation would be y=3x-19
7 0
4 years ago
Read 2 more answers
A box of chocolates contains five milk chocolates and six dark chocolates. Mike randomly picks a chocolate and eat it. Then Mike
aleksandr82 [10.1K]

Answer: 0.182

Step-by-step explanation:

For the first selection, the probability of picking a milk chocolate bar is equal to the number of milk chocolate bars divided the total number of bars, this is:

p1 = 5/(6 + 5) = 5/11

In the second selection we have the same equation, but now we have  4 milk chocolate bars (because one is alredy taken)

p2 = 4/(4 + 6) = 4/10

the joint probability is:

P = p1*p2 = (5/11)*(4/10) = 0.182

8 0
4 years ago
Is this congruent or not?
tester [92]

Answer:

Yes

Step-by-step explanation:

Same side lengths and same 90 degrees angle

6 0
3 years ago
What is the value of x?
Greeley [361]
12 units. Hope it helps. :-)
5 0
3 years ago
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