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zvonat [6]
3 years ago
5

If we have a normally distributed sample of ages ranging from 1 to 99 years, and we draw a score at random from this distributio

n, which of the following scores would we be most likely to draw?
A - 9
B - 22
C - 47
D - 86
Mathematics
1 answer:
svp [43]3 years ago
3 0

Answer:

C - 47

Step-by-step explanation:

In a normal distribution, the values are clustered around the center of curve. The center of the curve is the mean value of the distribution. As we go side ways the number of values decrease with respect to the mean.

A normal distribution is symmetric, the left and right hand side about the mean looks identical.

It is given in the problem that sample of ages follow normal distribution and the range is 1 to 99 years. The mean would most likely to be somewhere close to 50. Now lets assume that the mean of the distribution is indeed 50. Then it means that the number of people having age 50 would be greater than other ages. The number of people having ages 1 or 99 would be least. The closest number to 50 is 47 therefore, 47 is most likely to be drawn if we randomly draw one sample.  

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What is the fewest number of distinct points that must be graphed?
yanalaym [24]

Answer:

2

Step-by-step explanation:

This depends on what type of graph, like quadratic, linear, etc. For linear it would be 2 points.

3 0
3 years ago
A circle is inscribed in a square is 10 inch sides what is the circumference of the circle use 3.14 as an approximation for pie
MissTica

Answer:

31.4 inches

Step-by-step explanation:

If a circle is inscribed in a square then diameter of circle inscribed is same as  side as of square.

In the given problem it is given that side of square is 10 inches.

So diameter of  circle inscribed is 10 inches

we know radius of circle is half of  diameter of  circle

Thus, radius of circle inscribed = diameter of  circle/2 = 10/2 = 5inches.

Expression to calculate circumference of circle is given by 2\pi r

where r is the radius of circle.

Thus circumference of  circle inscribed is

2*\pi *5\\=> 10*3.14 \\=> 31.4

Thus, circumference of  circle inscribed is  31.4 inches

6 0
3 years ago
The next morning, Charlie got up and went to gather eggs from the chickens. He gathered three eggs from three chickens and 2 egg
ElenaW [278]

Answer: 21 eggs

Step-by-step explanation:

Charlie gathered 3 eggs from each of the three chickens so the total he gathered from chickns is:

= 3 * 3

= 9 eggs

From the 6 turkeys he got:

= 2 * 6

= 12 eggs

Eggs in total:

= 9 + 12

= 21 eggs

6 0
3 years ago
MN is a diameter of a circle with centre ' O ' . If BD = CD , prove that ∠OAD = ∠OCD
Varvara68 [4.7K]

Answer:

\sf \: Proved \: \angle \: OAD  \:  =  \angle \: OCD

Step-by-step explanation:

<em>Given:</em>

Mn is diameter of circle having centre O

and BD = OD,

<em><u>To prove that:</u></em>

<u>\angle \: OAD  \:  =  \angle \: OCD</u>

<em>Solution:</em>

Join the points O and B and draw OB,

On joining the line,

in ∆OCD and ∆OBD,

OC =OB → (Radius of same circle)

BD =CD → (from given)

OD =OD → (Common side in both the triangles)

Hence ∆OCD and ∆OBD are congruent from SSS property.

so we can say that,

\angle \: OBD  \:  =  \angle \: OCD

Consider above prove as statement A

Corresponding angles of congruent traingle.

in ∆ OAB,

OA = OB (radius of same circle)

hence ∆OAB is an isosceles traingle.

We know that opposite angle of isosceles traingle are always equal. hence,

\angle \: OBD  \:  =  \angle \: OAB \\ \angle \: OAB  \:  =  \angle \: OAD (same \: angles) \\ \angle \: OBD  \:  =  \angle \: OAD

Consider above prove as statement B

From Statement A & B we can say that

\angle \: OAD  \:  =  \angle \: OCD

<em>Thanks for joining brainly community!</em>

5 0
2 years ago
What two prime numbers equal 85
hram777 [196]
One and eighty five. 1x85=85 but 85 isnt prime>>>

7 0
3 years ago
Read 2 more answers
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