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2 years ago

Can someone explain this for me plss?

SAT

1 answer:

Alinara [238K]2 years ago

6 0

Answer:

175

Explanation:

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At a large corporation, the distribution of years of employment for the employees has mean 20.6 years and standard deviation 5.3

Cerrena [4.2K]

Answer:

Yes

Explanation:

The z score is a score used in statistics to determine by how many standard deviations the raw score is above or below the mean. The z score is given by:

$z=\frac{x-\mu}{\sigma}\\\\where\ \mu=mean.\sigma=standard\ deviation, x=raw\ score.\\\\For\ a \ sample\ size\ n:\\\\z=\frac{x-\mu}{\sigma/\sqrt{n} }$

For a normal distribution with a mean of μ and standard deviation σ, For any sample size (n) drawn from this population, the sample mean is normally distributed, with mean $\mu_x=\mu$ and standard deviation $\sigma_x=\frac{\sigma}{\sqrt{n } } \\\\$ .

Hence given that a mean of μ = 20.6 years and standard deviation σ = 5.3 years, for a sample size of 100:

mean $\mu_x=\mu=20.6\ years$ and standard deviation $\sigma_x=\frac{\sigma}{\sqrt{n } } =\frac{5.3}{\sqrt{100} }=0.53\ years \\\\$ .

7 0

3 years ago

Monet's later work became increasingly muddy and indistinct, combining longer brush strokes and less color contrast due to his

NeTakaya

I don’t know the answer help

7 0

3 years ago

Unit 2 Quiz

Karolina [17]

Answer: C. They will have more time to manage his mother's care.

Explanation:

A single income option means that only one of them will be working and only one source of income will be used to maintain all three of them including Daniel's mother. This will most definitely result in them having less disposable income and less financial income in general.

Also the scenario painted made no mention of a baby so option D is incorrect. The most likely option in C which makes sense because with one of them staying home to take care of the mother, they will have time to be able to take care of her better.

4 0

3 years ago

A man's speed with the current is 15 km/hr and the speed of the current is 2. 5 km/hr. The man's speed against the current is:.

sergij07 [2.7K]

Answer:

5km/hr

Explanation:

man's speed + current = 15km/hr

current speed =2.5km/hr

therefore man's speed = 15 - 2.5

=12.5

man's speed against current=12.5/2.5

=5km/hr

4 0

3 years ago

Singing What does it sound like in the culture? What is it used for?

const2013 [10]

It can display a thought, message or idea in a way that can be understood by many.

4 0

3 years ago