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8_murik_8 [283]
3 years ago
13

Please help which of the following statements could be a function?

Mathematics
1 answer:
iragen [17]3 years ago
7 0

Answer:

The first one height vs shoe size.

Step-by-step explanation:

Let's evaluate each choice

1) Generally, it is possible that the taller a person is, that his/her shoe size would generally get bigger also. Hence we can say that it is possible that there is a function correlation between height and shoe size.

2) hair length can be cut down short or left long regardless of the height of a person, so we cannot say for sure that hair length correlates with height. Hence this is probably not a function)

3) hair color has no bearing on a persons age. hence this is probably not a function.

4) student ID number doesn't depend on the name of the student. Hence this is probably not a function.

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Suppose instead of comparing independent measurements taken from two groups, you used a matched-pairs experiment and one treatme
lina2011 [118]

You should use a T distribution to find the critical T value based on the level of confidence. The confidence level is often given to you directly. If not, then look for the significance level alpha and compute C = 1-alpha to get the confidence level. For instance, alpha = 0.05 means C = 1-0.05 = 0.95 = 95% confidence

Use either a table or a calculator to find the critical T value. When you find the critical value, assign it to the variable t.

Next, you'll compute the differences of each pair of values. Form a new column to keep everything organized. Sum everything in this new column to get the sum of the differences, which then you'll divide that by the sample size n to get the mean of the differences. Call this dbar (combination of d and xbar)

After that, you'll need the standard deviation of the differences. I recommend using a calculator to quickly find this. A spreadsheet program is also handy as well. Let sd be the standard deviation of the differences

The confidence interval is in the form (L, U)

L = lower bound

L = dbar - t*sd/sqrt(n)

U = upper bound

U = dbar + t*sd/sqrt(n)

3 0
3 years ago
One number is 4 4 more than 2 2 times another. The sum of the numbers is 10 10 . Find the two numbers
tatuchka [14]
First no. = x 
Second no. = y

Equation Formation
4 x = 2 y.................equation (i)
x + y = 10...............equation (ii)

y = 2 x
x +2 x = 10
3 x = 10
x = 3 1/3

y = 10 - 3 1/3 
y = 6 2/3

 Answer = 3 1/3 , 6 2/3
5 0
3 years ago
How can you use a formula for one measurement to write a formula for a different measurement?
Dmitrij [34]

Answer:

Write the formula for one measurement, then solve the formula for the different measurement you want to find and use this new formula to find that measurement.

Step-by-step explanation:

 We can understand this through an example.

If we need to find the lenght of a rectangle whose width is 4 feet and whose perimeter is 28 feet, we can use a formula for one measurement to write a formula for a different measurement:

 - We need to write the formula for the perimeter of a rectangle:

P=2l+2w

Where "l" is the lenght and "w" is the width.

- Since we know the width and the perimeter of the rectangle and we need to find the lenght, we can solve for "l":

P=2l+2w\\\\P-2w=2l\\\\l=\frac{P-2w}{2}

Now we get a new formula for calculate a differente measurement (the lenght of the rectangle).

- Substituting values, we get:

l=\frac{28ft-2(4ft)}{2}=10\ ft

3 0
3 years ago
there are 30 students in a class. five of them are randomly selected to form a dance comittee how many different comittees can b
Mariulka [41]

Answer:

6

Step-by-step explanation:

30/5 = 6

8 0
3 years ago
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Line l has a slope of the line through which of the following pair of points is perpendicular to l?
Olenka [21]

Answer:

Step-by-step explanation:

I think its A

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