Let f(x)=x^2+5 and g(x)= (x+5)/x find (g fog f)(-3)

A teacher wants to see if a new unit on fractions is helping students learn. She has five randomly selected students take a pre-

mylen [45]

Answer:

Find the difference between the two scores for a number of sample distributions. Make a plot of the differences and check for outliers.

Step-by-step explanation:

Checking for Normality means basically checking if one's data distribution approximates a normal distribution.

A normal distribution is represented by a bell-shaped curve, peaking around the mean, indicating that all of the data spreads out from the mean.

Th original aim of the teacher is to check the effects of the particular added unit on the performance of students in the subject.

The teacher goes about this by testing the students before and after learning the unit.

The best way to compare of course, is to take a difference of the test scores for different samples. This first gives the idea of whether the newly introduced unit affects performance.

This set of differences is then checked for normality.

So, the best manner to make a plot of these differences. Like we mentioned earlier, a normal distribution is bell shaped. So, the plot of these differences would be a bell shaped curve if the distribution was normal and we wouldn't get a bell shaped curve if the distribution wasn't normal.

Checking for outliers help to eliminate part of data that can totally scatter the regular behaviour of the data distribution.

So, the best way for the teacher to check for normality is to find the difference between the two scores for a number of sample distributions. Make a plot of the differences and check for outliers.

Hope this Helps!!!

5 0

2 years ago

Two joggers, one averaging 7 mph and one averaging 6 mph, start from a designated initial point. The slower jogger arrives at th

baherus [9]

The distance is 14 miles; the first jogger finishes in two hours, while the slower jogger is still 12 miles in. The slower jogger then reaches the end of 14 miles twenty minutes later, because 6mph also means 2 miles per twenty minutes.

8 0

3 years ago

Someone explain to me if this is correct?

ddd [48]

Answer:

Yes, that is correct.

Step-by-step explanation:

W = x

L = ?

A = x^2 + 12x

(x^2 + 12x)/x = x + 12

L = x + 12

Subbing in 10 for each X, we get:

Perimeter: 64

2(10) + 2(10 + 12) = 20 + 44 = 64

Area: 220

10 * 22 = 220

8 0

3 years ago

Read 2 more answers

Help asap on all three thanks

mash [69]

1. All negative numbers added together are still negative

2. There is a proof and a theorem for it.

3. If it is an animal, then it has fur

5 0

3 years ago

The table shows the total number y (in billions) of U.S. movie admissions each year for x years. Use a graphing calculator to fi

wariber [46]

Answer:

By rounding up of the constant and coefficient terms, we have;

The line of best, fit is y = 1.23 + 3.46 × 10⁻²·x

Step-by-step explanation:

The table for the data on the number of movie admissions each year is presented as follows;

Year, x ${}$ Admission, y

0 ${}$ 1.24

2 ${}$ 1.26

4 ${}$ 1.39

6 ${}$ 1.47

8 ${}$ 1.49

10 ${}$ 1.57

Using a graphing calculator, we have that the line of best fit is given by the following equation;

y = 1.23047619048 + 3.45714285714 × 10⁻²·x

Which is approximately, y = 1.23 + 3.46 × 10⁻²·x

3 0

3 years ago