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Ipatiy [6.2K]
2 years ago
15

Challenge Eight different names were put into a hat. A name is chosen 123 times and the name

Mathematics
1 answer:
Margaret [11]2 years ago
6 0

Using the probability concept, it is found that:

  • There is a 0.1545 = 15.45% experimental probability of the name Karen being chosen.
  • There is a 0.125 = 12.5% theoretical probability of the name Karen being chosen.
  • If the number of names in the hat was different, the total number of outcomes would for the theoretical probability would be different, hence with less names the probabilities would increase, with more names the probabilities would decrease.

<h3>What is a probability?</h3>

A probability is given by the <u>number of desired outcomes divided by the number of total outcomes</u>.

For the experimental probability, the numbers of outcomes are taken from previous trials, hence considering the name Karen was chosen 19 times out of 123, we have that:

p_E = \frac{19}{123} = 0.1545

For the theoretical probability, the number of outcomes are taken from the "theory", that is, before the trials, hence considering that Karen is one out of 8 names:

p_T = \frac{1}{8} = 0.125

If the number of names in the hat was different, the total number of outcomes would for the theoretical probability would be different, hence with less names the probabilities would increase, with more names the probabilities would decrease.

You can learn more about probabilities at brainly.com/question/15536019

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Mario is setting up a new tent during a camping trip. The tent came with 7 feet of rope. The instructions are to use 34.5 inches
vampirchik [111]

An equation is formed of two equal expressions. The number of sections that Mario can cut from the rope is 6.

<h3>What is an equation?</h3>

An equation is formed when two equal expressions are equated together with the help of an equal sign '='.

Let the number of 8 1/4 - inch sections of rope Mario can cut from the rope be x.

Since the total length of the rope is 7 feet, which is equal to 84 inches(1 foot=12 inches), the instructions are to use 34.5 inches of the rope to tie a tarp on top of the tent. Therefore, the rope for the 8 1/4 inches section is,

Rope left = 84 inches - 34.5 inches

Since the length of a single section is 8 1/4 inches(8.25 inches), therefore the number of sections that can be made from the remaining section is,

The number of sections, n = Rope left/8.25 inches

                                             = (84 -34.5)inches /8.25 inches

                                              = 6

Hence, the number of sections that Mario can cut from the rope is 6.

Learn more about Equation:

brainly.com/question/2263981

#SPJ1

7 0
2 years ago
Find the number of positive numbers less than 2020, which can not be written as the sum of six consecutive positive numbers.
sveta [45]

Answer: 334

Step-by-step explanation:

6 consecutive numbers can be written as:

n, n+1, n+2, n + 3, n + 4, n + 5,

The addition of those 6 numbers is:

n + n+1 + n+2 + n + 3 + n + 4 + n + 5

6n + 1 + 2 + 3 + 4 + 5 = 6n + 15

Let's find the maximum n possible:

6n + 15 = 2020

6n = 2020 - 15 = 2005

n = 2005/6 = 334.16

The fact that n is a rational number means that 2020 is can not be constructed by adding six consecutive numbers, but we know that with n = 334 we can find a number that is smaller than 2020, and with n = 335 we can found a number bigger than 2020.

So with n =  334 we can find one smaller.

6*334 + 15 = 2019

and we can do this for all the values of n between 1 and 334, this means that we have 334 numbers less than 2020 that can be written as a sum of six consecutive positive numbers.

8 0
3 years ago
Simplify –3 – 1 what is the answer to this ?
QveST [7]

Answer:

-4

Step-by-step explanation:

-3-1= -4

A negative minus a positive= a "larger" positive.

5 0
3 years ago
Find the difference -10-(-7)=
Lelu [443]

Answer:

-3

Step-by-step explanation:

Since the - in -7 and the subtraction sign - are the same, you have to group them so now it is + (positive). -10 + 7 = -3

4 0
3 years ago
What is the solution to this equation?<br> W+4/2 + 3/4=w/3
Natasha_Volkova [10]

Answer:

In exact form it is w=-33/8

In decimal form it is w=-4.125

In mixed number form it is w=-4 1/8

Step-by-step explanation:

4 0
4 years ago
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