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3 years ago

Please help me with this :)

Mathematics

2 answers:

valentinak56 [21]3 years ago

6 0

Answer: its A ........................22 +/- (3(4)/sqrt 144) = 22 +/- 1 = 21 - 23

Step-by-step explanation:

rusak2 [61]3 years ago

4 0

Answer:

i wanna say A srry if im wrong tho im never right

Step-by-step explanation:

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Please help anyone......

Neko [114]

Answer:

5. is 39 and i don't want to answer the other one sorry:(

Step-by-step explanation:

7 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

How do you determine if a function notation is a solution ???? Please give an example

gulaghasi [49]

Answer:

Identify the input values.

Identify the output values.

If each input value leads to only one output value, classify the relationship as a function. If any input value leads to two or more outputs, do not classify the relationship as a function.

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Mitch just finished planting radishes, potatoes, carrots, celery, and peas in his new garden. The garden is a circle whose diame

Ede4ka [16]

Answer: The answer is 2289.06

Step-by-step explanation:

Since your diameter is 54, you will have to divided by 2 to get your radius,which is 27.

Then square 27 or just mutiply 27 x 27 and you should get the answer of 729.

Then times 729 by 3.14 and you will get 2289.06

3 0