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nadya68 [22]
3 years ago
11

All possible samples of size n are selected from a population and the mean of each sample is determined. What is the mean of the

sample means?
Mathematics
1 answer:
Masteriza [31]3 years ago
8 0

Answer:

The population mean

Step-by-step explanation:

Sample Mean is the mean of of the selected samples while the population Mean is the mean of all the population. The mean of the sampling distribution of the sample mean is equal to the mean of the original distribution (that is the sample mean is equal to the population mean).

The mean of the sample means is always approximately the same as the population mean

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First rewrite 3/8 and 2/5 so that they have common denominator. Then use to order 3/8 and 2/5
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A cell phone tower that is 150 ft tall sits on a mountain that
aliina [53]

Answer:

angle of elevation will be 2.14^o.

Step-by-step explanation:

Given,

height of tower = 150 ft

height of tower = 1200 ft

So, total height of peak of tower = 1200 + 150

                                                       = 1350 ft

distance of user from cell tower = 5 miles

                                                     = 5 x 5280 feet

                                                     = 26,400 feet

Since the height of user from sea level = 400 ft

so, height of peak of tower with respect to user = 1350 - 400 ft

                                                                                = 950 ft

If the angle of depression is assumed as \theta, then we can write

tan\theta\ =\ \dfrac{\textrm{height of peak of tower w.r.t user}}{\textrm{distance of user from tower}}

=>\ tan\theta\ =\ \dfrac{950}{26400}

=>\ tan\theta\ =\ 0.374

 =>\ \theta\ =\ 2.14^o

So, the angle of elevation will be 2.14^o.

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3 years ago
Bro PUH LEZ answer!!
Pachacha [2.7K]

Answer:

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Step-by-step explanation:

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3 years ago
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