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3 years ago

. The population of a city decreased from 25,000 to 24,000. Find the decrease percentage. at to be paid

Mathematics

2 answers:

Cerrena [4.2K]3 years ago

8 0

Answer:

Step-by-step explanation:

1000 of 25000 is 4%

lapo4ka [179]3 years ago

7 0

Answer:

Your answer is going to be 4%

Step-by-step explanation:

Hope this helps :)

pls mark brainliest :P

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oee [108]

The first one is 43/72 which can’t be simplified

The second one is 17/18

6 0

3 years ago

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

3 years ago

H(n)=-4n-5<br> g(n)=n-1<br> Find h(g(n)) =

Delicious77 [7]

Answer:

h(g(n))=4n-9

Step-by-step explanation:

h(g(n))=4*g(n)-5 ( we replace n in the formule of h(n) by g(n).

h(g(n))=4(n-1)-5

h(g(n))=4n-4-5

h(g(n))=4n-9

Hope you understand it

3 0

3 years ago

Can someone help me????

Lelu [443]

Answer:

Step-by-step explanation:

5 0

3 years ago

Which statement is true about the difference 2 square root of 7 − square root of 26?

lora16 [44]

2√7 - √26 ≈ 5.29150262213... - 5.09901951359...

... ≈ 0.19248310854...

The result is an irrational number not described by any of your answer selections.

None of the statements is true.

7 0

4 years ago

. The population of a city decreased from 25,000 to 24,000. Find the decrease percentage. at to be paid​

. The population of a city decreased from 25,000 to 24,000. Find the decrease percentage. at to be paid