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inna [77]
2 years ago
11

Please someone help I don’t understand this

Mathematics
1 answer:
irina [24]2 years ago
5 0

Answer:

336

Step-by-step explanation:

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Administrators at a large public high school are interested in their students’ standardized test scores. Last year, the mean sco
ratelena [41]

Answer:

The appropriate hypotheses for performing a significance test is:

H_0: \mu = 51

H_1: \mu > 51

Step-by-step explanation:

Last year, the mean score on the state’s math test was 51. The administrators have trained the teachers in a new method of teaching math hoping to raise the scores on this standardized test this year.

At the null hypothesis, we test if the mean score this year is the same as last year, that is:

H_0: \mu = 51

At the alternate hypothesis, we test if the mean score improved this year from last, that is:

H_1: \mu > 51

The appropriate hypotheses for performing a significance test is:

H_0: \mu = 51

H_1: \mu > 51

8 0
3 years ago
The options are -63/16, -61/16,-59/16, -31/8, -15/4, -29/8
SSSSS [86.1K]

Answer:

-31/8. That's the answer to your question

3 0
2 years ago
The price of a skateboard was reduced from $150 to $90. By what percentage was the price of the skateboard reduced?
nlexa [21]

Answer:

jjjjStep-by-step explanation:

8 0
2 years ago
Evaluate the expression when y = - 3.<br> - 7y2
yuradex [85]
So what you do for this one if you plug it in.
-7y2. So you have -7(-3)^2 which is -7(9) which is -63. So your answer is -63. Hope this helps!!!
4 0
3 years ago
Read 2 more answers
Need help on this please​
Likurg_2 [28]
The correct scale factor is 3 :)
5 0
3 years ago
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