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2 years ago

Hello can you please help me with this question

Mathematics

2 answers:

Papessa [141]2 years ago

8 0

The answer for this is a

rusak2 [61]2 years ago

4 0

Answer:

Step-by-step explanation:

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So basically I have to design and explain the care label which could be attached to a textile item.

aliina [53]

Answer:

do it yourself

Step-by-step explanation:

6 0

3 years ago

Construct the indicated confidence interval for the difference between the two population means. Assume that the two samples are

jasenka [17]

Answer:

The indicated confidence interval for the difference between the two population means is (-1.5159, 7.5159)

Step-by-step explanation:

Let the drying times of type A be the first population and the drying times of type B be the second population. Then

We have small sample sizes $n_{1} = 11$ and $n_{2} = 9$ , besides $\bar{x}_{1} = 71.5$ , $s_{1} = 3.4$ , $\bar{x}_{2} = 68.5$ and $s_{2} = 3.6$ . Therefore, the pooled

estimate is given by

$s_{p}^{2} = \frac{(n_{1}-1)s_{1}^{2}+(n_{2}-1)s_{2}^{2}}{n_{1}+n_{2}-2} = \frac{(11-1)(3.4)^{2}+(9-1)(3.6)^{2}}{11+9-2} = 12.1822$

The 99% confidence interval for the true mean difference between the mean drying time of type A and the mean drying time of type B is given by

$(\bar{x}_{1}-\bar{x}_{2})\pm t_{0.01/2}s_{p}\sqrt{\frac{1}{11}+\frac{1}{9}}$ , i.e.,

$(71.5-68.5)\pm t_{0.005}(3.4903)\sqrt{\frac{1}{11}+\frac{1}{9}}$

where $t_{0.005}$ is the 0.5th quantile of the t distribution with (11+9-2) = 18 degrees of freedom. So

$3\pm(-2.8784)(3.4903)(0.4495)$ , i.e.,

the indicated confidence interval for the difference between the two population means is (-1.5159, 7.5159)

5 0

3 years ago

Could someone help I’m so confused

oksano4ka [1.4K]

Answer:

6/4

Step-by-step explanation:

ratio of x to y is the slope so

you can use butterfly method/cross multiply (multiply numerator on one side to the denominator on the other to bring all the terms up and then solve for y)

4(y+3)=6(x+2)

4y+12=6x+12

y=6/4x

so it would be 6/4

4 0

3 years ago

What is the answer to the question? 2x^2=10x

Lina20 [59]

Answer:

The correct answer is 0 or 5

Step-by-step explanation:

In order to solve this, solve for 0.

2x^2 = 10x

2x^2 - 10x = 0

Now factor the polynomial.

x(2x - 10) = 0

Now set each piece individually equal to 0.

x = 0

2x - 10 = 0

2x = 10

x = 5

7 0

3 years ago

Read 2 more answers

25 points pls help me quickly

lianna [129]

7x+10y=36

y=2x+9

7x+10y=36

-2x+y=9 /*10

7x+10y=36

20x-10y=-90

+---------------------

27x=-54 //27

x=-2

-2(-2)+y=9

y=5

x=-2

y=5

7 0

4 years ago

Read 2 more answers