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Alex
3 years ago
12

(07.06 MC) The graph of f(x) = 2x + 1 is shown below. Explain how to find the average rate of change between x = 0 and x = 3.

Mathematics
2 answers:
xxMikexx [17]3 years ago
7 0

Answer:

2.

Step-by-step explanation:

We have been given the formula of a function f(x)=2x+1. We are asked to find the average rate of change of the given function between x=0 and x=3.

To find the average rate of change we will use formula:

\text{Average rate of change}=\frac{f(b)-f(a)}{b-a}

Upon substituting our given values in above formula we will get,

\text{Average rate of change}=\frac{f(3)-f(0)}{3-0}

\text{Average rate of change}=\frac{2\cdot 3+1-(2\cdot 0+1)}{3-0}

\text{Average rate of change}=\frac{6+1-(0+1)}{3}

\text{Average rate of change}=\frac{6}{3}

\text{Average rate of change}=2

Therefore, the average rate of change for our given function between x=0 and x=3 is 2.

Tju [1.3M]3 years ago
5 0
Find the rate of change at x=0 and at x=3, then find the average of those values.

f(0) = 2(0) + 1 = 1
f(3) - 2(3) + 1 = 7
 
\frac{f(0)+f(3)}{2} =  \frac{1 + 7}{2} =  \frac{8}{2} = 4

Answer: 4


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Step-by-step explanation:

Hello!

The students of a statistic class were separated in two groups for an exam (those who studied - groups 1- and those who didn't study- group 2-) after the exam the proportions of students that passed in both groups were calculated and a 95% CI for the difference of proportions was obtained: (-0.005,0.125)

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To use a CI to decide over a hypotheses pair several conditions should be met:

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If the conditions are met, then you can decide using the following rule:

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Since "zero" is contained by the given interval, the decision is to not reject the null hypothesis. The at 5% confidence level you can conclude that the questions didn't discriminate between the students that studied and the students that didn't study.

I hope it helps!

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