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Troyanec [42]
2 years ago
9

ILL GIVE BRAINLIEST IF YOUR CORRECT PLEASE HELP

Mathematics
2 answers:
777dan777 [17]2 years ago
4 0

Answer:

B) 72 cm²

Step-by-step explanation:

<u>Area of a trapezoid formula:</u>

A=\frac{a+b}{2} *h

<u>Given:</u>

a = 15

b = 9

h = 6

Work:

A=\frac{a+b}{2} *h\\\\A=\frac{15+9}{2} *6\\\\A=\frac{24}{2} *6\\\\A=12*6\\A=72

muminat2 years ago
3 0

Answer:

<u>72 cm²</u>

Step-by-step explanation:

Area of trapezoid :

  • A = 1/2 x (a + b) x h

Solving :

  • A = 1/2 x (15 + 9) x 6
  • A = 3 x 24
  • A = <u>72 cm²</u>
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A pizza chain plans to locate a new pizza franchise on the CCSU campus if the results of a survey show that more than 10% of CCS
kari74 [83]

Answer:

a) Null and alternative hypothesis:

H_0: \pi=0.1\\\\H_a:\pi>0.1

b) A Type I error is made when a true null hypothesis is rejected. In this case, it would mean a conclusion that the proportion is significantly bigger than 10%, when in fact it is not.

c) The consequences would be that they would be more optimistic than they should about the result of the investment, expecting a proportion of students that is bigger than the true population proportion.

d) A Type II error is made when a false null hypothesis is failed to be rejected. This would mean that, although the proportion is significantly bigger than 10%, there is no enough evidence and it is concluded erroneously that the proportion is not significantly bigger than 10%

e) The consequences would be that the investment may not be made, even when the results would have been more positive than expected from the conclusion of the hypothesis test.

Step-by-step explanation:

a) The hypothesis should be carried to test if the proportion of students that would eat there at least once a week is significantly higher than 10%.

Then, the alternative or spectulative hypothesis will state this claim: that the population proportion is significantly bigger than 10%.

On the contrary, the null hypothesis will state that this proportion is not significantly higher than 10%.

This can be written as:

H_0: \pi=0.1\\\\H_a:\pi>0.1

7 0
3 years ago
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