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Brrunno [24]
3 years ago
13

FREE GIVE AWAY IN 5 MINUTES

Mathematics
2 answers:
Olegator [25]3 years ago
8 0

Answer:

Thanks.......... follow me

IRINA_888 [86]3 years ago
8 0

Answer:

please go help me with my 4 most recent questions please!!

Step-by-step explanation:

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Barron's reported that the average number of weeks an individual is unemployed is 17.5 weeks. Assume that for the population of
Olin [163]

Answer:

P(16.5

And using the normal standard table or excel we find the probability:

P(-1.768< Z< 1.768) = P(Z

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the avergae number of weeks an individual is unemployed of a population, and for this case we know the distribution for X is given by:

X \sim N(17.5,4)  

Where \mu=17.5 and \sigma=4

Since the distribution for X is normal then, the distribution for the sample mean \bar X is given by:

\bar X \sim N(\mu= 17.5, \frac{\sigma}{\sqrt{n}}= \frac{4}{\sqrt{50}}=0.566)

We select a sample of n =50 people. And we want to find the following probability

P(16.5

And using the normal standard table or excel we find the probability:

P(-1.768< Z< 1.768) = P(Z

4 0
4 years ago
What’s the line of y= -1/2x+2
lord [1]

Answer:

A picture of the graph is attached

Step-by-step explanation:

4 0
3 years ago
How too work this out
Oduvanchick [21]

Answer:

x = 4

Step-by-step explanation:

\frac{7 + 2x}{3} = 5

Multiply both sides of the equation by 3

7 + 2x = 15

Subtract 7 from both sides of the equation

2x = 8

Divide both sides of the equation by 2

x = 4

Hope this helps :)

4 0
3 years ago
Solve for 3(x+1) = 2(x-1)<br> Somebody PLEASE HELP!!
beks73 [17]

Answer:use the app socratic

Step-by-step explanation:for all math answers

8 0
3 years ago
Read 2 more answers
Train A leaves Westtown and travels at 50 mph toward Smithville, 330 miles away. At the same time, Train B leaves Smithville and
Hoochie [10]
Here is your answer....

8 0
3 years ago
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