Y=x^2-4x-1 in vertex form

In an effort to improve scores on college-entrance exams, the principal at a large high school chooses 35 students

denpristay [2]

Using the t-distribution, it is found that the test statistic for the hypotheses test is given by:

$t = \frac{-1.75 - 0}{\frac{7.12}{\sqrt{35}}}$

<h3>What are the hypotheses tested?</h3>

At the null hypotheses, it i tested if the mean difference remains the same, that is:

$H_0: \mu = 0$

At the alternative hypotheses, it is tested if it has decreased, hence:

$H_a: \mu < 0$ .

<h3>What is the test statistic?</h3>

The test statistic is given by:

$t = \frac{\overline{x} - \mu}{\frac{s}{\sqrt{n}}}$

The parameters are:

$\overline{x}$ is the sample mean.

$\mu$ is the value tested at the null hypothesis.

s is the standard deviation of the sample.

n is the sample size.

The parameters are given as follows:

$\overline{x} = -1.75, s = 7.12, n = 35$ .

Hence the test statistic is given by:

$t = \frac{\overline{x} - \mu}{\frac{s}{\sqrt{n}}}$

$t = \frac{-1.75 - 0}{\frac{7.12}{\sqrt{35}}}$

More can be learned about the t-distribution at brainly.com/question/16162795

#SPJ1

5 0

1 year ago

Can I get step by step explanation and answer on numbers 2,4,14, and 36 please

neonofarm [45]

answer for 2nd is Constant.

answer for 4th is Evaluate.

answer for 14th is one subtracted from a number w.

answer for 36th is a number n is divided by 2.4

hope it helps you mate thanks for the question and if possible please mark it as brainliest

7 0

3 years ago

An amusement park studied methods for decreasing the waiting time (minutes) for rides by loading and unloading riders more effic

Digiron [165]

Answer:

see explaination

Step-by-step explanation:

The p-value for Factor A is greater than 0.1

What is your conclusion with respect to Factor A?

Factor A is not significant.

The p-value for Factor B is greater than 0.1

What is your conclusion with respect to Factor B?

Factor B is not significant.

The p-value for the interaction of factors A and B is greater than 0.1

What is your conclusion with respect to the interaction of Factors A and B?

The interaction of Factors A and B is not significant.

What is your recommendation to the amusement park?

Since method is not a significant factor, use either loading and unloading method.

4 0

3 years ago

Create an array for 4x5.

Artist 52 [7]

Basically, like this:
• • • • •
• • • • •
• • • • •
• • • • •

8 0

2 years ago

Find the surface area of the regular pyramid. round to the nearest tenth if necessary.

Morgarella [4.7K]

the answer is a

hope this helps

3 0

2 years ago