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AleksandrR [38]
2 years ago
15

What is the simpler form of (6 + m^2) (6 -m^2)​

Mathematics
1 answer:
PtichkaEL [24]2 years ago
8 0

Answer:

=36-m^4

Step-by-step explanation:

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What percent of 20 is 16?!!!<br><br>What's the answer and how do I work the problem out?!!
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<span>16/20 is 80%.</span>

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A local eat-in pizza restaurant wants to investigate the possibility of starting to deliver pizzas. The owner of the store has d
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Answer:

Read step by step explanation

Step-by-step explanation:

The owner already knows that the limit for the average time delivered pizzas is 38 minutes. So we conclude

1.-The resulting mean from sample data ( x ) ( 27 customers) need to be smaller than 38 minutes, any value of sample above 38 minutes means more time for the delivery action and will indicate a failure for the future project

2.-As sample size is smaller than 30 the test has to be  t-student one tail test to the left

Test hypothesis

Null hypothesis                       H₀                  x  = 38

Alternative hypothesis           Hₐ                  x  <  38

We should test at a significance level α  = 0,05       (α = 5%)

If the result of the test is to accept  H₀  delivery project won´t be implemented, if on the other hand, H₀ is rejected then in the condition of the alternative hypothesis we accept Hₐ the sample indicates that we have a smaller average time than 38 minutes.

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