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Luba_88 [7]
3 years ago
5

Plz any1 need help on this question

Mathematics
1 answer:
Andreas93 [3]3 years ago
6 0

Since the intersection is - by definition - common to both sets, we can work out the number of people that use only the fitness suite or the swimming pool.

We know that 57 people use the fitness suite, but 36 of those are already counted in the intersection. So, 57-36=21 people use only the fitness suite.

The same goes for the swimming pool: 49-36=13 people use only the swimming pool.

So, we have:

  • 21 people using fitness suite only
  • 13 people using swimmng pool only
  • 36 people using both

This sums to 21+13+36=70 people. We deduce that 30 people don't use any of the features.

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The statistic for this case would be:

z=\frac{\hat p -p_o}{\sqrt{\frac{\hat p(1-\hat p)}{n}}}

And replacing we got:

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Step-by-step explanation:

For this case we have the following info:

n =700 represent the sample size

X= 305 represent the number of employees that earn more than 50000

\hat p=\frac{305}{700}= 0.436

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And replacing we got:

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So i think its $4.35.

Step-by-step explanation:

I did addition to find out this answer my calculations seem to be correct.

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