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ser-zykov [4K]
3 years ago
15

Please help please brainliest

Mathematics
2 answers:
Cerrena [4.2K]3 years ago
8 0

Answer:

i think its c sorry if am wrong

Delvig [45]3 years ago
4 0
I’m pretty sure it’s c!
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) One year, professional sports players salaries averaged $1.5 million with a standard deviation of $0.9 million. Suppose a samp
Nutka1998 [239]

Answer:

Probability that the average salary of the 400 players exceeded $1.1 million is 0.99999.

Step-by-step explanation:

We are given that one year, professional sports players salaries averaged $1.5 million with a standard deviation of $0.9 million.

Suppose a sample of 400 major league players was taken.

<em>Let </em>\bar X<em> = sample average salary</em>

The z-score probability distribution for sample mean is given by;

                 Z = \frac{ \bar X -\mu}{{\frac{\sigma}{\sqrt{n} } }} }  ~ N(0,1)

where, \mu = mean salary = $1.5 million

            \sigma = standard deviation = $0.9 million

             n = sample of players = 400

The Z-score measures how many standard deviations the measure is away from the mean. After finding the Z-score, we look at the z-score table and find the p-value (area) associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X.

So, probability that the average salary of the 400 players exceeded $1.1 million is given by = P(\bar X > $1.1 million)

    P(\bar X > $1.1 million) = P( \frac{ \bar X -\mu}{{\frac{\sigma}{\sqrt{n} } }} } >  \frac{ 1.1-1.5}{{\frac{0.9}{\sqrt{400} } }} } ) = P(Z > -8.89) = P(Z < 8.89)

<em>Now, in the z table the maximum value of which probability area is given is for critical value of x = 4.40 as 0.99999. So, we can assume that the above probability also has an area of 0.99999 or nearly close to 1.</em>

Therefore, probability that the average salary of the 400 players exceeded $1.1 million is 0.99999.

4 0
2 years ago
Which answer choice shows the correct set up for the right hand sum with 3 rectangles of equal length to find the area between t
babymother [125]

Answer:

the top answer

Step-by-step explanation:

right hand Riemanns are an over approximation, so it would include higher number sets.

5 0
3 years ago
13. Mr. Carmello drives 30 miles each
Sauron [17]

Answer:

240 miles

Step-by-step explanation:

he drives 30 miles there and back which is 60 miles and 6 times 4 is 24 so 60 times 4 is 240

8 0
2 years ago
An ant crawls at a rate of 2 1/6 ft per minute. At this rate, how long does it take the ant to crawl a distance of 5 1/5 ft? Ent
tangare [24]
For 2 1/6 = 13/6 Ft, ant takes = 1 min.
So, for 1 ft, it takes = 6/13 min.

Now, for 5 1/5 = 26/5 min. it would take = 6/13 * 26/512/5 = 2.4 min

In short, Your Answer would be 2.4 min

Hope this helps!
3 0
3 years ago
Read 2 more answers
Need an answer:<br><br> Graph g(x)=5|x-6|+2
yKpoI14uk [10]
Your minimum is at (6,2)
your vertical intercept is at (0,32)
your domain: (-infinity, infinity)
your range: [2, infinity)

8 0
3 years ago
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