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omeli [17]
3 years ago
7

Pls help branliest if right

Mathematics
1 answer:
Bezzdna [24]3 years ago
7 0

Answer:

sorry I donot know

I wish I could help

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Define z_alpha to be a z-score with an area of alpha to the right. For Example: z_0.10 means P(Z > z_0.10) = 0.10. We would a
Reptile [31]

Answer:

a) P(-z_0.025 < Z < z_0.025)

For this case we want a quantile that accumulates 0.025 of the area on the tails of the normal standard distribution, and for this case we can calculate the z value with the following excel codes:

"=NORM.INV(0.025,0,1)"

"=NORM.INV(0.025,0,1)"

And for this case the two values are :z_{crit}= \pm 1.96

b) P(-z_{\alpha/2} < Z < z_{\alpha/2})

For this case we want a quantile that accumulates \alpha/2 of the area on the tails of the normal standard distribution, and for this case we can calculate the z value with the following excel codes:

"=NORM.INV(alpha/2,0,1)"

"=NORM.INV(alpha/2,0,1)"

c) For this case we want to find a value of z that satisfy:

P(Z > z_alpha) = 0.05.

And we can use the following excel code:

"=NORM.INV(0.95,0,1)"

And we got z_{\alpha/2}=1.64

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Part a

P(-z_0.025 < Z < z_0.025)

For this case we want a quantile that accumulates 0.025 of the area on the tails of the normal standard distribution, and for this case we can calculate the z value with the following excel codes:

"=NORM.INV(0.025,0,1)"

"=NORM.INV(0.025,0,1)"

And for this case the two values are :z_{crit}= \pm 1.96

Part b

P(-z_{\alpha/2} < Z < z_{\alpha/2})

For this case we want a quantile that accumulates \alpha/2 of the area on the tails of the normal standard distribution, and for this case we can calculate the z value with the following excel codes:

"=NORM.INV(alpha/2,0,1)"

"=NORM.INV(alpha/2,0,1)"

Part c

For this case we want to find a value of z that satisfy:

P(Z > z_alpha) = 0.05.

And we can use the following excel code:

"=NORM.INV(0.95,0,1)"

And we got z_{\alpha/2}=1.64

6 0
3 years ago
Please help quickly! (:
tekilochka [14]
Congruent angles (: this means that BGE+30=90!(: So... BGE=60. so you can go over the axis. it's equal to the mirrored angle
6 0
3 years ago
Help due by 11 it 10 :55
belka [17]

Answer: 0.11

Step-by-step explanation: (2/3) / 6 = 0.11

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Length of rectangle

Rectangle 1) 23m
Rectangle 2) 14yd

Width of rectangle

Rectangle 1) 36m
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An expressions is an equations but without the equal sign ( = ) and without the solution ( the answer)

The formula To find the area of a rectangle is

A = base * height
or
A = length * width

Rectangle’s area written in as an expression

Rectangle 1) 23 * 36
Rectangle 2) 14 * 3.5

To find the area, you multiply the numbers

23 * 36 = 828
14 * 3.5 = 49

Rectangle’s area written as a number

Rectangle 1) 828m
Rectangle 2) 49yd
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Total assets are $54,000,000 and total liabilities are $11,200,000. What is the current ratio?
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C. 2.8

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