3 years ago

Find X and Y Give work for the problem

Mathematics

1 answer:

Annette [7]3 years ago

5 0

Answer:

x=2.645

y=2.645

You might be interested in

A random sample of 23 items is drawn from a population whose standard deviation is unknown. The sample mean isx⎯ ⎯ x¯ = 840 and

gayaneshka [121]

Answer:

$(832.156, \ 847.844)$

Step-by-step explanation:

Given data :

Sample standard deviation, s = 15

Sample mean, $\overline x = 840$

n = 23

a). 98% confidence interval

$\overline x \pm t_{(n-1, \alpha /2)}. \frac{s}{\sqrt{n}}$

$$E= t_{( n-1, \alpha/2 )} \frac{s}{\sqrt n}}$

$t_{(n-1 , \alpha/2)} \frac{s}{\sqrt n}$

$t_{(n-1, a\pha/2)}=t_{(22,0.01)} = 2.508$

∴ $E = 2.508 \times \frac{15}{\sqrt{23}}$

$E = 7.844$

So, 98% CI is

$(\overline x - E, \overline x + E)$

$(840-7.844 , \ 840+7.844)$

$(832.156, \ 847.844)$

4 0

3 years ago

keiko had 6 more red tiles than yellow tiles she gave half of her yellow tiles to ramon. if ramon has 7 yelliw tiles how many ti

kondor19780726 [428]

It would be 6.5 excuse if it was 14 it would be 7 but the other half would be 6.5

6 0

3 years ago

taro has marbles whose total mass is 24g if each marble has a mass of about 1.5g how many marbles does taro have

guajiro [1.7K]

24 divided by 1.5 equals 16

Taro has 16 marbles

3 0

3 years ago

Select the factor pairs for the number 28. Choose ALL that apply.

12345 [234]

BCD Are All Correct
Hope This Helps

7 0

3 years ago

What is the slope of the line with equation y-3=-1/2(x-2)?

ludmilkaskok [199]

Answer:

slope = - $\frac{1}{2}$

Step-by-step explanation:

The equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

y - 3 = - $\frac{1}{2}$ (x - 2) ← is in point- slope form

with slope m = - $\frac{1}{2}$

6 0

3 years ago