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3 years ago

Analyze the decimal number 8.46 and determine the value of each digit.

Mathematics

1 answer:

AURORKA [14]3 years ago

6 0

Answer:

8 units, 4 tenths and 6 hundredths

Step-by-step explanation:

The decimal number 8.46 can be expressed as following

The number at unit place is 8

The number at tenth place is 4

The number at hundredth place is 6

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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

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3 years ago

Which equations show the identity property of multiplication?

Lady bird [3.3K]

My answer is a and c becuase they equal the same on each side

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3 years ago

Given f(x) and g(x) = f(x) + k, use the graph to determine the value of k.

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Answer:

find out how many units higher g(x) is compared to f(x).

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Since the graph is 3 units higher, the value of k must be 3.

Step-by-step explanation:

ok i honestly hope i answerd this correctly because im terrible at reading math

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3 years ago

What is a bank statement

azamat

Answer:

A bank statement can be defined as a record of payments in and out of a bank account.

Step-by-step explanation:

For example, energy providers offer direct debit payments as the amount that is used each month may vary and they take the required amount at each bill. Standing orders are similar to a direct debit except that they are for a fixed amount.

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3 years ago

A family of 3 children and 2 adults visited a health club. The club charges $y an hour for each child and $x an hour for each ad

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Solution:

A family of 3 children and 2 adults visited a health club. The club charges $y an hour for each child and $x an hour for each adult.

First we make inequality according to question.

In a family number of children 3

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Charge for 3 children = 3y

Charge for 1 Adult = $x per hour

Charge for 2 adults = 2x

If the family does not want to s[end more than $30 an hour at health club.

Where, x and y should be greater than 0.

Now we make the graph of this inequality.

First we take equality of equation and then find x and y table.

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3 years ago