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Nady [450]
2 years ago
8

Hey! Could someone help me with this question as quick as possible? Hope everyone is having a great day/night.

Mathematics
1 answer:
Setler [38]2 years ago
6 0
The y-intercept should be -3
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Convert 3.2 kilometers to meters
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3200

Step-by-step explanation:

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3 years ago
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In a recent survey of college professors, it was found that the average amount of money spent on entertainment each week was nor
Alenkinab [10]

Answer:

0.0918

Step-by-step explanation:

We know that the average amount of money spent on entertainment is normally distributed with mean=μ=95.25 and standard deviation=σ=27.32.

The mean and standard deviation of average spending of sample size 25 are

μxbar=μ=95.25

σxbar=σ/√n=27.32/√25=27.32/5=5.464.

So, the average spending of a sample of 25 randomly-selected professors is normally distributed with mean=μ=95.25 and standard deviation=σ=27.32.

The z-score associated with average spending $102.5

Z=[Xbar-μxbar]/σxbar

Z=[102.5-95.25]/5.464

Z=7.25/5.464

Z=1.3269=1.33

We have to find P(Xbar>102.5).

P(Xbar>102.5)=P(Z>1.33)

P(Xbar>102.5)=P(0<Z<∞)-P(0<Z<1.33)

P(Xbar>102.5)=0.5-0.4082

P(Xbar>102.5)=0.0918.

Thus, the probability that the average spending of a sample of 25 randomly-selected professors will exceed $102.5 is 0.0918.

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All the yellow surfaces on this ferris wheel pod
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20 in because it will over everything
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6x + 3y = -4<br> 15x + 7y = -8<br> how many solutions does the system of equations have?
dimulka [17.4K]
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Find the volume of the cylinder in terms of π and to the nearest tenth.
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The answer is 18pi
3 \times 3 \times 2 \times \pi = 18\pi




good luck
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