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3 years ago

PLEASE HELP WILL GIVE BRAINLIEST AND 20 POINTS!

Mathematics

1 answer:

MAXImum [283]3 years ago

4 0

What are the x coords? The only answer I might be able to give is .86-3.302=-2.442

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Does anyone know the answer to the pic shown above?

Ganezh [65]

Answer:

-1 is the answer

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

Is 12/1,000 repeating or terminating Please i need it right now

maria [59]

Answer:

the answer is 0.012, terminating

Step-by-step explanation:

move the decimal place three places to the left

since it is not repeating it is terminating

8 0

2 years ago

The 2008 Workplace Productivity Survey, commissioned by LexisNexis and prepared by World One Research, included the question, "H

LenaWriter [7]

Answer:

A 95% confidence interval estimate of the mean number of hours a legal professional works on a typical workday is [7.44 hours, 10.56 hours].

Step-by-step explanation:

We are given that x is normally distributed with a known standard deviation of 12.6.

A sample of 250 legal professionals was surveyed, and the sample's mean response was 9 hours.

Firstly, the pivotal quantity for finding the confidence interval for the population mean is given by;

P.Q. = $\frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } }$ ~ N(0,1)

where, $\bar X$ = sample average mean response = 9 hours

$\sigma$ = population standard deviation = 12.6

n = sample of legal professionals = 250

$\mu$ = mean number of hours a legal professional works

Here for constructing a 95% confidence interval we have used One-sample z-test statistics as we know about population standard deviation.

So, 95% confidence interval for the population mean, $\mu$ is ;

P(-1.96 < N(0,1) < 1.96) = 0.95 {As the critical value of z at 2.5% level

of significance are -1.96 & 1.96}

P(-1.96 < $\frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } }$ < 1.96) = 0.95

P( $-1.96 \times {\frac{\sigma}{\sqrt{n} } }$ < ${\bar X-\mu}$ < $-1.96 \times {\frac{\sigma}{\sqrt{n} } }$ ) = 0.95

P( $\bar X-1.96 \times {\frac{\sigma}{\sqrt{n} } }$ < $\mu$ < $\bar X+1.96 \times {\frac{\sigma}{\sqrt{n} } }$ ) = 0.95

95% confidence interval for $\mu$ = [ $\bar X-1.96 \times {\frac{\sigma}{\sqrt{n} } }$ , $\bar X+1.96 \times {\frac{\sigma}{\sqrt{n} } }$ ]

= [ $9-1.96 \times {\frac{12.6}{\sqrt{250} } }$ , $9+1.96 \times {\frac{12.6}{\sqrt{250} } }$ ]

= [7.44 hours, 10.56 hours]

Therefore, a 95% confidence interval estimate of the mean number of hours a legal professional works on a typical workday is [7.44 hours, 10.56 hours].

5 0

2 years ago

What is the domain and range of 1,2 2,4 3,9 4,16

Yuliya22 [10]

Answer:

Range=15

Step-by-step explanation:

I know this because the range is when you subtract the highest number by the lowest number.

3 0

2 years ago

Which expression can be written as

Sunny_sXe [5.5K]

Answer:

B. $\sqrt{108}$

Step-by-step explanation:

The simplified forms of these roots are :

A. $\sqrt{63}$ = $3 \sqrt{7}$

B. $\sqrt{108}$ = $6 \sqrt{3}$

C. $\sqrt{144}$ = $3 \sqrt{286}$

D. $\sqrt{150}$ = $5 \sqrt{6}$

Check:

$\sqrt{108}$

$\sqrt{36(3)}$

$\sqrt{ {6}^{2} \times 3}$

$6 \sqrt{3}$

<h3>Hope it is helpful...</h3>

5 0

3 years ago