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Wittaler [7]
3 years ago
15

This Question: 1 pt

Mathematics
1 answer:
Bezzdna [24]3 years ago
8 0

Answer:69.420

Step-by-step explanation:

I just want points

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A professor believes the students in a statistics class this term are more creative than most other students attending the unive
djverab [1.8K]

Answer:

Correct option: B

Step-by-step explanation:

The professor can perform a One-mean <em>t</em>-test to determine whether the average score of the students in his class is more than the average score of all the students attending university.

A <em>t</em>-test will be used instead of the <em>z</em>-test because the population standard deviation is not provided instead it is estimated by the sample standard deviation.

The hypothesis for this test can be defined as follows:

<em>H₀</em>: The average score of the students in his class is not more then the entire university, i.e. <em>μ ≤ 35</em>.

<em>Hₐ</em>: The average score of the students in his class is more then the entire university, i.e. <em>μ > 35</em>.

Given:

\bar x=40\\SE_{\bar x}=1.63

The test statistic is:

t=\frac{\bar x-\mu}{SE_{\bar x}}=\frac{40-35}{1.63}=3.0674\approx3.07

Thus, the correct option is (B).

4 0
3 years ago
What do u do if u have to remember the milestone test that is coming up??
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.The children initially didn't expect to have fun cleaning the attic, but then they discovered the treasure map.

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How to graph equasions
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3 years ago
An earthquake causes a 3 kg book to fall from a shelf. If the book lands with a speed of 4.0 m/s, from what height did it fall?
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Given:
3kg book
speed of falling of 4.0 m/s
acceleration due to gravity -9.8 m/s² 

Vf² = Vi² + 2 * a * d

Vf = final velocity ; Vi = initial velocity ; a = acceleration ; d = distance

0² = (4 m/s)² + 2(-9.8m/s²) * d
0 = 16 m²/s² -19.6 m/s² * d
-16 m²/s² = -19.6 m/s² * d
-16 m²/s²  / -19.6 m/s² = d
 0.82 m = distance

The 3 kg book fell from the a shelf at the height of 0.82 meters.
6 0
3 years ago
What would be a reasonable estimate for the value of m in 31+m=307
il63 [147K]

31 rounds to 30

307 rounds to 310

30+m≈310

m≈310-30

m≈280

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