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Art [367]
3 years ago
6

Let x1, x2, ...x64 be a random sample from a distribution with mean 64 and standard deviation 4. then mean and the standard devi

ation of the sample mean are:
Mathematics
1 answer:
VARVARA [1.3K]3 years ago
7 0

The mean of sample means is the same as the mean of the underlying distribution.


The standard deviation of sample means is the original distribution sample mean divided by the square root of the number of samples.


Mean of sample mean distribution: 64

SD of sample mean distribution: 4/√64 = 1/2

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PLEASE HELP! Will give Brainliest!
-BARSIC- [3]

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6 0
4 years ago
Express the -0.345 in the form of p\q and reduce it to the lowest term​
Mamont248 [21]

Answer:

-69/200

Step-by-step explanation:

-0.345 is in decimal form.

In Fractional form (p/q)

=-345/1000

To simplify, divide the numerator and the denominator by the G.C.D(Greatest Common Divisor) of p and q.

In this case,G.C.D of 345 and 1000 is 5.

Simplified form=-69/200 [ANS]

3 0
4 years ago
Identify the slope and y-intercept of this equation and then show the steps to convert to standard form
kirill [66]

The slope is the factor in front of x, so slope is 9.

The y intercept is 7 (that's the point of cross the y axis, where x=0)

There are multiple definitions of "standard form" for lines, so here are the two i can think of:

9x - y = -7    (the implicit function form)

or

y-7 = 9*(x-0)  (the point-slope form)

Lmk if you have questions.

5 0
3 years ago
Solve this by Substituton
lana66690 [7]
There is no solution for this equation
4 0
3 years ago
How do I solve this equation?
Norma-Jean [14]

Answer:

1. move the constant to the right hand side to change its sign.

2.add the numbers.

3. using the absolute value definition rewrite the absolute value equation as two separate equations.

4.slove the equation for X

Step-by-step explanation:

it has two solutions

x=8

x= -9

the answer should be X1= 9, x2 =8

6 0
3 years ago
Read 2 more answers
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