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mafiozo [28]
3 years ago
7

Major league baseball salaries averaged $3.26 million with a standard deviation of $1.2 million in a recent year. suppose a samp

le of 100 major league players was taken. find the approximate probability that the mean salary of the 100 players exceeded $4.0 million.
Mathematics
1 answer:
Anastaziya [24]3 years ago
8 0
Given:
μ = $3.26 million, averaged salary
σ = $1.2 million, standard deviation
n = 100, sample size.

Let x = random test value
We want to determine P(x>4).

Calculate z-score.
z = (x - μ)/ (σ/√n) = (4 - 3.26)/(1.2/10) = 6.1667

From standard tables,
P(z<6.1667) = 1
The area under the distribution curve = 1.
Therefore
P(z>6.1667) = 1 - P(z<=6.1667) = 1 - 1 = 0

Answer: The probability is 0.

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2 years ago
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Answer:

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right top: (8x4)-(1x1) = 31

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3 years ago
Use the change of base formula to evaluate log3(73).
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The change of base formula allows you to write a logarithm in terms of logarithms with another base. It follows this pattern,

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I hope I was able to answer your question. Have a good day.
3 0
3 years ago
Will give Brainliest!
Oduvanchick [21]

Answer:

<em><u>y = d + a · cos(bx - c) ⇒ y = -4cos(4/3x)</u></em>

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Amplitude = |a| = |-4| = 4

Period = \frac{2\pi }{b} =\frac{2\pi }{\frac{4}{3} } =2\pi *\frac{3}{4} =\frac{3}{2} \pi

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Here, the time goes on the x axis and the distance will go on the y axis.
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Since we are dealing with the domain, we really only need to focus on the time.
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From this, we see that the values go from 0 to 10. This means that x can be anything from 0 to 10. Because there are y values that correlate with the numbers 0 and 10, we know that the domain will include 0 and 10. This indicates we must use brackets. 

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