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3 years ago

A stock investment of 160 shares

Mathematics

1 answer:

lukranit [14]3 years ago

6 0

Answer:

$1572.50

Step-by-step explanation:

Given that 160 shares paid a dividend of $680.00 then 370 shares would have a higher figure.

First, we calculate the equivalent dividend for 1 share.

Since 160 shares give $680

1 share will be $680÷160=$4.25

Knowing the dividend of 1 share as $4.25, then to get dividend for 370 shares, we get their products

Value=370*$4.25=$1572.50

Therefore, an equivalent of $1572.50 would be paid for 370 shares

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Calculating the degrees of freedom, the sample variance, and the estimated standard error for evaluations using the t statistic

Yuliya22 [10]

Answer:

a) For the first part we have a sample of n =10 and we want to find the degrees of freedom, and we can use the following formula:

$df = n-1= 10-1=9$

d.9

b) $s^2 = \frac{SS}{n-1}= \frac{600}{41-1}= 15$

a.15

c) For this case we have the sample size n = 25 and the sample variance is $s^2 =400$ , the standard error can founded with this formula:

$SE = \frac{s^2}{\sqrt{n}}= \frac{400}{\sqrt{25}}= 80$

Step-by-step explanation:

Part a

For the first part we have a sample of n =10 and we want to find the degrees of freedom, and we can use the following formula:

$df = n-1= 10-1=9$

d.9

Part b

From a sample we know that n=41 and SS= 600, where SS represent the sum of quares given by:

$SS = \sum_{i=1}^n (X_i -\bar X)^2$

And the sample variance for this case can be calculated from this formula:

$s^2 = \frac{SS}{n-1}= \frac{600}{41-1}= 15$

a.15

Part c

For this case we have the sample size n = 25 and the sample variance is $s^2 =400$ , the standard error can founded with this formula:

$SE = \frac{s^2}{\sqrt{n}}= \frac{400}{\sqrt{25}}= 80$

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3 years ago

In how many ways can 3 cards from a deck of 52 cards can be laid in a row face up?

tresset_1 [31]

Ok slot method
3 slots
1st slot has 52 options
2nd slot has 51 optoins (1 went to first slot)
3rd slot has 50 options (1 went to previous slot)

number of ways=52*51*50=132600 ways

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Answer:

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Step-by-step explanation:

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the angle is 254

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82 times 0.35
the answer is 28.7

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