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-BARSIC- [3]
3 years ago
5

and collect coins. has x coins. has coins fewer than times the number of coins has. Write and simplify an expression for the tot

al number of coins and have.
Mathematics
1 answer:
galina1969 [7]3 years ago
3 0

Answer: this question is incomplete

Step-by-step explanation:

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In your own words, describe the difference between correlation and causation. Give an example (not given in the content) of two
Semmy [17]

The difference between causation and correlation is that, Causation is characterized by cause-and-effect while correlation establishes a probable relationship.

<h3>What is the difference between Causation and correlation?</h3>

While Causation is characterized by a situation in which an action certainly causes an outcome and hence, is described as a cause-and-effect relationship, Correlation on the other hand only establishes a relationship between the two events and doesn't necessarily ascertain the occurrence of the other event .

An example of two variables which may be correlated is; the height and weight of an individual in which case it is generally perceived that taller people are heavier.

Read more on correlation and causation;

brainly.com/question/964703

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4 0
2 years ago
For parts a and bâ, use technology to estimate the following. âa) The critical value of t for a 90â% confidence interval with df
rjkz [21]

Answer:

a) For the 90% confidence interval the value of \alpha=1-0.9=0.1 and \alpha/2=0.05, with that value we can find the quantile required for the interval in the t distribution with df =3. And we can use the folloiwng excel code: "=T.INV(0.05,3)" and we got:

t_{\alpha/2} =\pm 2.35

b) For the 99% confidence interval the value of \alpha=1-0.99=0.01 and \alpha/2=0.005, with that value we can find the quantile required for the interval in the t distribution with df =106. And we can use the folloiwng excel code: "=T.INV(0.005,106)" and we got:

t_{\alpha/2} =\pm 2.62

Step-by-step explanation:

Previous concepts

The t distribution (Student’s t-distribution) is a "probability distribution that is used to estimate population parameters when the sample size is small (n<30) or when the population variance is unknown".

The shape of the t distribution is determined by its degrees of freedom and when the degrees of freedom increase the t distirbution becomes a normal distribution approximately.  

The degrees of freedom represent "the number of independent observations in a set of data. For example if we estimate a mean score from a single sample, the number of independent observations would be equal to the sample size minus one."

Solution to the problem

Part a

For the 90% confidence interval the value of \alpha=1-0.9=0.1 and \alpha/2=0.05, with that value we can find the quantile required for the interval in the t distribution with df =3. And we can use the folloiwng excel code: "=T.INV(0.05,3)" and we got:

t_{\alpha/2} =\pm 2.35

Part b

For the 99% confidence interval the value of \alpha=1-0.99=0.01 and \alpha/2=0.005, with that value we can find the quantile required for the interval in the t distribution with df =106. And we can use the folloiwng excel code: "=T.INV(0.005,106)" and we got:

t_{\alpha/2} =\pm 2.62

3 0
4 years ago
Find the mean of 7, 1, 1, 4, 1, 4 graphically. What is the sum of the number???
labwork [276]

Answer:

The mean is 3. The sum of the number is 18.

Step-by-step explanation:

1+1+1+4+4+7 = 18

18 divided by 6= 3

8 0
3 years ago
30 POINTS! SIMPLE LONG DIVISION!
vova2212 [387]

2635 divided by 17 equals 155

6 0
3 years ago
On a viased dice the probability of getting a 1 is 3.0
Nataly [62]

Answer:

4 ones.

Step-by-step explanation:

5 0
3 years ago
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