For a standard normal curve, find the z-score that separates the bottom 90% from the top 10%.

1 answer:

5 0

In the back of your statistics text, there is a table labeled something like "areas under the normal distribution." Look for the portion values for the longer or smaller portion to get your Z score.

I really hope this helps you :)

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Which pair of numbers is the greatest common factor 15?

gavmur [86]

Answer:

The answer is 3 and 5

Step-by-step explanation:

3 and 5 is 15 (correct)

10 and 25 is 250 (not correct)

30 and 60 is 1800 (not correct)

60 and 75 is 450 (not correct)

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3 years ago

Part 3 <br>please help <br>

aleksandr82 [10.1K]

I'm taking "part 3" to mean the 3rd of the posted questions.

If $f(x)=(x^3+2x)\ln x$ , then

$f'(x)=(x^3+2x)'\ln x+(x^3+2x)(\ln x)'=(3x^2+2)\ln x+\dfrac{x^3+2x}x$

$\implies f'(x)=(3x^2+2)\ln x+x^2+2$

Then when $x=1$ , we get $f'(1)=3$ .

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3 years ago

You roll a standard number cube. Find P(number greater than 3).

tigry1 [53]

The correct answer to this question is: "1/2"

You are rolling a standard number cube with numbers from 1-6. There are 3 numbers that are more than or greater than 3. This means that the other half are lesser than 3.

P(number greater than 3) = 3 / 6 = 1 / 2
So the probability of getting a number greater than 3 is 1/2

6 0

4 years ago

Read 2 more answers

A townhouse in San Francisco was purchased for $80,000 in 1975. The appreciation of the building is modeled by the equation: A=8

jonny [76]

Answer:

In 1981 was the building worth double it’s value.

Step-by-step explanation:

Given : A townhouse in San Francisco was purchased for $80,000 in 1975. The appreciation of the building is modeled by the equation : $A=80000(1.12)^t$ , where t represents time in years.