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FrozenT [24]
3 years ago
14

Assume a recent sociological report states that university students drink 5.70 alcoholic drinks per week on average, with a stan

dard deviation of 1.7201. Suppose Jason, a policy manager at a local university, decides to take a random sample of 170 university students to survey them about their drinking habits. Determine the mean and standard deviation of the sampling distribution of the sample mean alcohol consumption. Provide your answer with precision to two decimal places.
Mathematics
1 answer:
Triss [41]3 years ago
5 0

Answer:

Mean= 5.70

Standard deviation= 0.132

Step-by-step explanation:

For the distribution of sample mean:

Mean of the sampling distrubution = \mu = 5.70

Standard deviation of the sampling distrubution = sigma/sqrt{n} = 1.7201 /sqrt{170} = 0.132

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Answer:

0.875

Step-by-step explanation:

look at the fraction as a division problem

8÷7

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Select the expression that is equivalent<br> to 4.1.d.d.d.
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Serhud [2]

Answer:

I think its d

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I need to use the Pythagorean Theorem to find X. I don’t know how to do that!!
frutty [35]

Answer:

17) x=8

18) x=\sqrt{189} or x= 3\sqrt{21}

Step-by-step explanation:

So the rule is a^{2} +b^{2} =c^{2}, "c" being the hypothenuse, or the long line that is opposite to the right angle.

17) We know that both values of x are equal to each other, which makes everything 10x easier!

                                               x^{2} +x^{2} =(8\sqrt{2})  ^{2}

(by the way we know the x values are our a and b values because they are legs! the way I like to remember the legs is that they are connected to the right angle box, and therefore support the hypothenuse)

<em>simplify</em> (╥︣﹏╥)    

                                                2x^2=8^2(\sqrt{2} )^{2}  

                                                  2x^2=64(2)

                                                   2x^2=128    

                                                  x^{2}= 128/2  

                                                     x^{2} =64

                                                        x=8      

18) Just pretend that the flipped triangle doesn't exist. It's parallel to the other triangle with values on it, and basically servers no purpose other than being parallel to the sister triangle :)

Anyways, since we know the hypothenuse (15) but we don't know one of our leg values (x), we're going to change our equation a bit!

                                                    c^{2} - b^{2} = a^{2}

It doesn't matter if you put the one leg value in a or b, just as long as you stick to that same equation you started with the entire time!

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                                                   225-36=x^{2}  

                                                     x^{2} =189

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        The more you do these, the easier they'll get, so don't worry!

                           

4 0
3 years ago
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padilas [110]

Answer:

12.1 repeating

Step-by-step explanation:

73/6=12.16666666...

6 0
3 years ago
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