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sergey [27]
3 years ago
14

The College Board states that the average math SAT score is 514 with a standard deviation of 117. Colleen gathered data from 50

students in her graduating class and found the average score to be 523. She thinks that her class’s math SAT score is different from the average. Which of the following are the correct null hypothesis and alternate hypothesis?
Mathematics
2 answers:
ratelena [41]3 years ago
7 0
In hypothesis testing, A null hypothesis (H0) is a claim which the person conducting the research wants to test while an alternative hypothesis (H1) is a contradiction of the null hypothesis.

There are two types of tests in hypothesis testing.

One tailed test: In one tailed test, a claim that a parameter is greater than/ less than a value is being tested. i.e mean > value or mean < value.

Two tailed test: In a two tailed test, a claim that a value is equal to a value is tested, i.e mean = value.

In the question above, Colleen is testing the claim that the average score of her class is the same as others against that it is different from others.
Therefore, the null hypothesis is H0: mean = 514 while the alternative hypothesis is H1: mean ≠ 514
kherson [118]3 years ago
6 0

Answer:

C

Step-by-step explanation:

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Answer:

  29

Step-by-step explanation:

The third in sequence will be the middle one, the average value of all the numbers in the sequence. That average is the sum (145) divided by the number of numbers (5).

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2 years ago
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Step-by-step explanation:

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The magnitude of a vector is resolved by using a formula

<h3>Magnitude of a Vector</h3>

This is the displacement between two vectors and can be calculated as

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In this question, the vectors are

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Let's find the magnitude of this vector

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The magnitude of the vectors is 7.2

Learn more on magnitude of vectors here;

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