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2 years ago

Which of the following relations is not a function ?

Mathematics

1 answer:

harina [27]2 years ago

6 0

Answer:

Step-by-step explanation:

dalawa ang 1 sa domain (x)

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A group of researchers wants to know whether men are more likely than women to contract a novel coronavirus. They surveyed two r

olasank [31]

Answer:

Test statistic Z= 0.13008 < 1.96 at 0.10 level of significance

null hypothesis is accepted

There is no difference proportion of positive tests among men is different from the proportion of positive tests among women

Step-by-step explanation:

<em>Step(I)</em>:-

Given surveyed two random samples of 390 men and 360 women who were tested

first sample proportion

$p_{1} = \frac{360}{390} = 0.9230$

second sample proportion

$p_{2} = \frac{47}{52} = 0.9038$

Step(ii):-

Null hypothesis : H₀ : There is no difference proportion of positive tests among men is different from the proportion of positive tests among women

Alternative Hypothesis:-

There is difference between proportion of positive tests among men is different from the proportion of positive tests among women

$Z = \frac{p_{1}- p_{2} }{\sqrt{PQ(\frac{1}{n_{1} }+\frac{1}{n_{2} } } }$

where

$P = \frac{n_{1}p_{1} +n_{2} p_{2} }{n_{1}+n_{2} }$

P = 0.920

$Z= \frac{0.9230-0.9038}{\sqrt{0.920 X0.08(\frac{1}{390}+\frac{1}{52} } )}$

Test statistic Z = 0.13008

Level of significance = 0.10

The critical value Z₀.₁₀ = 1.645

Test statistic Z=0.13008 < 1.645 at 0.1 level of significance

Null hypothesis is accepted

There is no difference proportion of positive tests among men is different from the proportion of positive tests among women

7 0

2 years ago

Find the domain of f(x) =√3x-1

maw [93]

Answer:

The domain of the expression is all real numbers except where the expression is undefined. In this case, there is no real number that makes the expression undefined.

( − ∞ , ∞ )

{x | x ∈ R }

Hope this helps I'm 80% sure this right.

4 0

2 years ago

A decorator has estimated the following costs for remodeling a large conference room in your office area: carpeting, $2,620; con

goldfiish [28.3K]

$2,620
$0,750
$0,630
$0,050
$0,090
+$0,425

=$4,665

7 0

3 years ago

What is 4g=24?................

Gnesinka [82]

4g = 24

First, divide both sides by 4. / Your problem should look like: g = $\frac{24}{4}$
Second, simplify $\frac{24}{4}$ to 6. / Your problem should look like: g = 6

Answer: g = 6

4 0

2 years ago

Read 2 more answers

A table costs $50 more than a chair. The cost of 6 chairs and 1 table is $750. The equation 6x + x + 50 = 750, where x is the co

Varvara68 [4.7K]

The equation representing the cost of 6 chairs and a table is:

6x + x + 50 = 750

⇒
7x = 700

This equation is true for x = 100 because:

7(100) = 700

So, the cost of one chair will be $100.

Cost of table is $50 more than a chair, so the cost of one table is $150.

So the answers are:
$ 100
$ 100
$ 150

4 0

2 years ago

Read 2 more answers