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In-s [12.5K]
3 years ago
12

This is a project that’s due this Friday. I need help on everything pleaseeee help me.

Mathematics
1 answer:
pishuonlain [190]3 years ago
8 0

Answer:

ok fking fk it ill just tell you, the most affordable way is doing it as a 4*3 package, the length will be 16, width 12, and the height 5. the area will be 960in^3, and the SA will be 664 in^2

Step-by-step explanation:

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26. Students who take a statistics course are given a pre-test on the concepts and skills for the first chapter of a statistics
hjlf

The test statistic value lies to the right of the critical value. So we have sufficient evidence to reject the null hypothesis.

<h3>What are null hypotheses and alternative hypotheses?</h3>

In null hypotheses, there is no relationship between the two phenomenons under the assumption or it is not associated with the group. And in alternative hypotheses, there is a relationship between the two chosen unknowns.

Students who take a statistics course are given a pre-test on the concepts and skills for the first chapter of a statistics course.

Then they are given a post-test once the professor has concluded lecturing on the material.

Pre-test and post-test scores for 4 students in an elementary statistics class are given below.

Then we have

\mu _d = \mu _{post} - \mu _{pre}

Then the null hypotheses and alternative hypotheses will be

H₀: \mu _d = 0

Hₐ: \mu _d > 0

Then the test statistic will be

\rm \overline{x} _d = \dfrac{\Sigma x_d}{n} = \dfrac{15+12+10+1}{4}\\\\\overline{x} _d = 9.5

Then

\rm S_d = 6.02

The test statistic value is given by

\rm t = \dfrac{\overline{x} _d }{\dfrac{S_d}{\sqrtn}} \\\\t = \dfrac{9.5}{\dfrac{6.02}{\sqrt4}}\\\\t = 3.16

Since this is a right-tailed test, so the critical value is given by

\rm t_{n-1}(\alpha ) = t_3 (0.05) = 2.353

Since the test statistic value lies to the right of the critical value. So we have sufficient evidence to reject the null hypothesis.

Hence, we can conclude that \mu _d > 0 that is test scores have improved.

More about the null hypotheses and alternative hypotheses link is given below.

brainly.com/question/9504281

#SPJ1

7 0
2 years ago
What is the solution to this system of equations? -5.9x-3.7y=-2.1 and 5.9x+3.7y=2.1
goblinko [34]

No solution because everything cancels out

3 0
2 years ago
If kelley has 273626256 steps and denna has 227963762 how much steps do they get in all
kkurt [141]

Answer:

501590018 steps

Step-by-step explanation:

To find this high numbered problem all you have to do is add the steps in total. You would add 273626256 and 227963762 to get 501590018

5 0
3 years ago
Read 2 more answers
The next model of a sports car will cost 4.7% less than the current model the current model cost 31000. How much will the price
natka813 [3]

Step-by-step explanation:

decrease value is 1353

value 31,647

7 0
2 years ago
5 Seth bought a used car that had been driven 20,000
Svetllana [295]

49,400-20,000=29400

29400/24=1225 average miles per month

8 0
3 years ago
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