2 years ago

(c) In a math competition, Roberto scored 535 points and Senaida scored 450 points. By how

Mathematics

2 answers:

Svetlanka [38]2 years ago

8 0

Answer:

Step-by-step explanation:

535-450=85

Marrrta [24]2 years ago

4 0

Answer:

probably 85 points

Step-by-step explanation:

535 - 450

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sweet [91]

Answer:

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Step-by-step explanation:

Step(i):-

Given that the mean of the Population = 43

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Given that the standard deviation of the Population = 25

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Step(ii):-

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Test statistic

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$Z = \frac{47-43 }{\frac{25}{\sqrt{76} } }$

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Final answer:-

The calculated value Z = 1.39 <1.96 at 0.05 level of significance

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ElenaW [278]

0.657g is the correct answer

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