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Mamont248 [21]
3 years ago
10

In a​ survey, 400 people were asked to choose one card out of five cards labeled 1 to 5. The results are shown in the table. Com

pare the theoretical probability and experimental probability of choosing a card with the number 3.
Number 1 2 3 4 5
Frequency 32 96 128 112 32
Mathematics
2 answers:
-BARSIC- [3]3 years ago
6 0

Answer:

The value of the experimental probability is greater

Step-by-step explanation:

For the theoretical probability;

the probability that a card with the number 3 is selected is 1/5

We consider that the probabilities of each selection are equal, for the theoretical probability

For the experimental, we simply place the frequency of the selection 3 over the total

that will be 128/400 = 8/25

As we know that 8/25 is greater than 1/5

We can conclude that the value of the experimental probability is greater than that of the theoretical

konstantin123 [22]3 years ago
3 0

Answer:

I hate math

Step-by-step explanation:

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20. The H.M. between 2 and 8 is<br>(1 marks )​
e-lub [12.9K]

Answer as an improper fraction = 16/5

Answer as a mixed number = 3 & 1/5

Answer in decimal form = 3.2

All of those values represent the same thing, but written in a different way.

=============================================================

Explanation:

I'm assuming HM stands for Harmonic Mean in this case.

If so, then we apply the reciprocal operation to each value to get 1/2 and 1/8 (from 2 and 8 respectively).

Add up those fractions:

1/2 + 1/8 = 4/8 + 1/8 = 5/8

Now we'll divide n = 2 over that result. The n = 2 refers to the number of items in the original set.

n divide over (5/8) = 2*(8/5) = 16/5 which is the answer as an improper fraction

-----------

To convert to a mixed number, we can do the following:

16/5 = (15+1)/5

16/5 = 15/5 + 1/5

16/5 = 3 + 1/5

16/5 = 3 & 1/5

Or if you need the answer in decimal form, then using a calculator would get you 16/5 = 3.2

6 0
3 years ago
Sum of 2 numbers equals 95 .if one number exeeds by 25 find the athor number​
abruzzese [7]

Answer:

Well it could be 25 and 69 or 30 and 65

Step-by-step explanation:

Not sure if I answered right but hope I helped!

3 0
3 years ago
ILL GIVE YOU BRAINLIEST
kirza4 [7]

Answer:

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Step-by-step explanation:

Brainliest?

8 0
3 years ago
Read 2 more answers
for a certain company, the cost function for producing x items is C(x)=40x+150 and the revenue function for selling x items is R
Mademuasel [1]

Answer  :

Step-by-step explaation:

c(80) =40x80 +150 =3350  üretim için 80  parçanın maliyeti

satış için ise : R(80) 0.5(80-110)^2+6,050 =  456

3350-456=2983.95 kar ederler  

5 0
3 years ago
PLEASE HELP ME ?!!!!!
cluponka [151]

Answer:

b & c for sure

Step-by-step explanation:

............

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