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2 years ago

6

True or False? Set A = { X | X is an even whole number between 0 and 2} = ∅

2 answers:

N76 [4]2 years ago

7 0

It is false because 0and 2 and the middle number will be 1

Rufina [12.5K]2 years ago

5 0

Here are examples of "even whole numbers:" 2, 4, 8, 12, 16, ...

X must be a whole number. The only whole number between 0 and 2 is 1. Unfortunately, that's not an even number. Thus, Set A is "empty." The given statement is FALSE.

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2 years ago

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According to the February 2008 Federal Trade Commission report on consumer fraud and identity theft, 23% of all complaints in 20

Murljashka [212]

Answer:

There is not enough evidence to support the claim that Alaska had a lower proportion of identity theft than 23%.

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 1432

p = 23% = 0.23

Alpha, α = 0.05

Number of theft complaints , x = 321

First, we design the null and the alternate hypothesis

$H_{0}: p = 0.23\\H_A: p < 0.23$

This is a one-tailed test.

Formula:

$\hat{p} = \dfrac{x}{n} = \dfrac{321}{1432} =0.2241$

$z = \dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}$

Putting the values, we get,

$z = \displaystyle\frac{0.2241-0.23}{\sqrt{\frac{0.23(1-0.23)}{1432}}} = -0.5305$

Now, we calculate the p-value from the table.

P-value = 0.298

Since the p-value is greater than the significance level, we fail to reject the null hypothesis and accept the null hypothesis.

Conclusion:

Thus, there is not enough evidence to support the claim that Alaska had a lower proportion of identity theft than 23%.

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2 years ago

In a certain year the population of a country reached 321 million. The overall birth rate was births per 1000, and the overall

kkurt [141]

Answer:

Then it would stay at 321 million

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if the birth and death rate is both 1000 then nothing will change. Population wise.

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