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Hunter-Best [27]
4 years ago
7

How can I substitute s to the 2nd power

Mathematics
2 answers:
Basile [38]4 years ago
5 0
I think it's s 2 I'm not 100 percent
pashok25 [27]4 years ago
4 0
S^2
SxS
S^(S-1)xS
Any of those should work
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The mean life of a television set is 123 months with a standard deviation of 19 months. If a sample of 55 televisions is randoml
sp2606 [1]

Answer:

1- P(-0.47 < z < 0.47) = 0.63836

Step-by-step explanation:

Here, we want to get the answer to;

1-P ( -0.47 < z < 0.47)

Mathematically, we are going to use the standard normal distribution table for this

Let us try to evaluate;

P(-0.47 < z < 0.47)

Mathematically, that will be;

P (z < 0.47) - P(z < -0.47)

where P (z < -0.47) = P( z > 0.47)

so we have

P(-0.47 < z < 0.47) = P(z < 0.47) - P(z > 0.47)

So we have this using the standard normal distribution table as follows;

0.68082 - 0.31818 = 0.36164

Now, we can insert this in the earlier expression of;

1- P(-0.47 < z < 0.47)

= 1-0.36164 = 0.63836

4 0
3 years ago
A repeated-measures research study comparing two treatments with a set of 10 scores in each treatment will produce a t statistic
Anni [7]

Answer:

False Option B

Step-by-step explanation:

From the question we are told that:

Sample size n=10

Assumed degrees of freedom df'=19

Generally for the df of the t test

df=n-1

df=10-1df=10-1

df=9

Since

df \neq df'

Therefore

The correct option is

False Option B

5 0
3 years ago
A normal distribution of data has a mean of 90 and a standard deviation of 18. what is the approximate z-score for the value 64?
alex41 [277]

Answer:

The approximate z-score for the value 64 is -1.4.

Step-by-step explanation:

Since, the z-score or standard score for the value x is,

z=\frac{x-\mu}{\sigma}

Where,

\mu is the mean score,

\sigma is the standard deviation,

Here, x = 64,

\mu=90

\sigma=18

Hence, the z-score for the value 64 is,

z=\frac{64-90}{18}

=\frac{-26}{18}

=-1.44444444444\approx -1.4

Second option is correct.

3 0
4 years ago
Read 2 more answers
Yo idk if anyone can understand this but I need help :P
alina1380 [7]

Answer:

It will take one more 1/3 to fill the bird feeder

Step-by-step explanation:

4 0
4 years ago
Read 2 more answers
The coordinates below are the three vertices of a rectangle. Identify the fourth coordinate and the area of the rectangle.
lys-0071 [83]
<span>The coordinates of the three vertices of a rectangle are :
</span>
A(-3,3) ,  b(-3,-2)  and   c(4,-2)
The easy way to find the fourth vertex by the graphing the given points
See the attached figure 
the given points are in blue color 
and by using the symmetry of the rectangle 
So, the coordinates of the fourth point D is (4,3) which are in red color
The base of the rectangle is the distance BC
From the graph ⇒⇒ BC = 7
The height of the rectangle is the distance AB 
From the graph ⇒⇒ AB = 5
The area of the rectangle = base * height = 7 * 5 = 35

So, the correct answer is option <span>A(4, 3), 35 units squared</span>

7 0
3 years ago
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