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STatiana [176]
3 years ago
13

There are 125 people in a sport centre.

Mathematics
1 answer:
Maurinko [17]3 years ago
4 0

Answer: 97/125

Step-by-step explanation:

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Select the correct solution set. x + 17 ≤ -3
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Answer:

{x | x ≤ -20}

Step-by-step explanation:

x + 17 ≤ -3

Subtract 17 from each side

x + 17-17 ≤ -3-17

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Answer:

Step-by-step explanation:

If majority of adults prefer a window seat when they fly, it means that more than half or more than 0.5 of the population prefer a window seat when they fly.

We would set up the hypothesis test.

For the null hypothesis,

p = 0.45

For the alternative hypothesis,

p > 0.5

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q = probability of failure = 1 - p

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x = number of success = 492

n = number of samples = 806

P = 492/806 = 0.61

We would determine the test statistic which is the z score

z = (P - p)/√pq/n

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From the normal distribution table, the p value < 0.00001

Since alpha, 0.01 < than the p value, then we would reject the null hypothesis. Therefore, at a 1% significance level, we can conclude that the majority of adults prefer a window seat when they fly.

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What is the definition of union and intersection
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Step-by-step explanation:

the union of two sets is a new sets that contains all of the elements that are in at least one or two sets and written as (A U B)

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Please help me! Im really confused on how to solve problems like this
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A = -bc
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