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Svetradugi [14.3K]
3 years ago
9

Traci plans to conduct a coin-flipping experiment to see if the probability of landing on "heads" or "tails" is close to the the

oretical probability of 1 2 . Which experiment is likely to yield a result closest to the theoretical probability?
Mathematics
2 answers:
Anika [276]3 years ago
8 0

given experiment is an example of binomial experiment.

the value can be verified by flipping the coins 50 times and recording and comparing the results.

Over [174]3 years ago
6 0
Flipping the coin 100 times
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Write a subtraction expression for the number line model. Which subtraction expression does the number line model​ show?
Doss [256]
The subtraction model to the left
7 0
3 years ago
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A soccer field is 100 yd wide and 130 yd long. find the length of the diagonal of such a field. give an exact answer as a radica
Misha Larkins [42]
We know that
<span>applying the Pythagorean theorem
c</span>²=a²+b²
c is the <span>length of the diagonal
a=100 yd
b=130 yd
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the answer is
the length of the diagonal is 10√269 units  or 164.012 units
4 0
3 years ago
What is the simplified version of 3x•5-x-2
My name is Ann [436]

Answer:

14x-2

Step-by-step explanation:

1) 15x-x-2

2)14x-2

7 0
3 years ago
Studies have suggusted that twins, in their early years, tend to have lower IQs and pick up language more slowly than non-twins.
Anna007 [38]

Answer:

Confidence interval: (21.9, 32.9).

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 26 - 1 = 25

98% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 25 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.98}{2} = 0.99. So we have T = 2.485

The margin of error is:

M = T\frac{s}{\sqrt{n}} = 2.485\frac{11.2}{\sqrt{26}} = 5.5

In which s is the standard deviation of the sample and n is the size of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 27.4 - 5.5 = 21.9 hours

The upper end of the interval is the sample mean added to M. So it is 27.4 + 5.5 = 32.9 hours

Confidence interval: (21.9, 32.9).

5 0
3 years ago
A baseball has a 15 cm diameter what is the voulme of the contents of the ball
ddd [48]

Answer:

The answer is 1767.15cm^3

Step-by-step explanation:

The formula for finding the volume of a spherical object is 4/3(π)(r^3),where r is the radius of the object. But here only the diameter was given. And diameter=2(r), where r is radius.

So to find the radius, divide the diameter by 2. Since by making r the subject of the equation you get r=diameter/2.

Using the formula

4/3(π)(r^3)=(4π((15/2)^3))/3

=(4π(7.5^3)/3

=(4π(421.875))/3

Since π is 3.141592654

(4π(421.875))/3=1/3(4(3.141592654)(421.875))

=1/3(5301.437603)

=1767.145868

But I rounded off the answer to 2 decimal places and so I got 1767.14

7 0
3 years ago
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