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Lostsunrise [7]
3 years ago
5

g Suppose you wish to perform a hypothesis test for a population mean. Suppose that the population standard deviation is known,

the population distribution is Normal, and the sample is small. Would you perform a z-test or t-test?
Mathematics
1 answer:
NikAS [45]3 years ago
5 0

Answer:

z-test.

Step-by-step explanation:

We want to perform an hypothesis test for a population mean.

In the case that the <u>standard deviation of the population is known</u> and the population distribution is normal, even if the sample is small, <u>we will use a z-test</u>.

The usual case is to not know the standard deviation of the population, in which case a t-test is adequate instead of a z-test, taking into account the degrees of freedom of the sample.

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Two points on a line L are (5,2) and (7,-4). what is the slope of L
klemol [59]

Answer:

-3

Step-by-step explanation:

The slope of a line can be calculated with the formula (y2-y1)/(x2-x1)

In this case we have:

(-4-(2))/(7-5)

(-6)/(2)

-3

Let me know if this helps!

8 0
2 years ago
What is the value of 2x^2-2(x+4) when x = 5?<br> A.–32<br> B. 24<br> C. 32<br> D. 40
KatRina [158]

Answer:

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Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
I will upvote and give brainliest answer
zloy xaker [14]

Answer:

x=17

Step-by-step explanation

i just did the exact same question on a test and got it right .

6 0
3 years ago
Slove for x: x+1/3=1/4
lana [24]
Hey!


To solve this problem, we must subtract one over three from both sides of the equation. This will give us x on its own.

<em>Original Equation :</em>
x + \frac{1}{3} = \frac{1}{4}

<em>New Equation {Added Subtract \frac{1}{3} to Both Sides} :</em>
x + \frac{1}{3} - \frac{1}{3} = \frac{1}{4} - \frac{1}{3}

<em>Solution {New Equation Solved} :</em>
x=- \frac{1}{12}

<em>So, this means that in the equation provided</em>,  x=- \frac{1}{12}.

Hope this helps!


- Lindsey Frazier ♥
6 0
3 years ago
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He would have to charge 80 cents per candy bar!
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