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3 years ago

Can you help me on this question

Mathematics

1 answer:

ikadub [295]3 years ago

7 0

Answer:

Step-by-step explanation:

i dont know that

question...

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Take ´em of leave ´em....<br> What is 2+2?

Semmy [17]

Answer:

Step-by-step explanation:

thx for the points lol

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3 years ago

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B=2/3(H+5) Solve for H Thank you :)

kenny6666 [7]

Answer:

h= 2/3/B -5

Step-by-step explanation:

move h=5 to the other side, divide b, then subtract 5

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3 years ago

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8.23 A manufacturing company produces electric insulators. You define the variable of interest as the strength of the insulators

Kitty [74]

Answer:

The 95% confidence interval estimate for the population mean force is (1691, 1755).

Step-by-step explanation:

According to the Central Limit Theorem if we have an unknown population with mean μ and standard deviation σ and appropriately huge random samples (n > 30) are selected from the population with replacement, then the distribution of the sample mean will be approximately normally.

The sample selected here is <em>n</em> = 30.

Thus, the sampling distribution of the sample mean will be normal.

Compute the sample mean and standard deviation as follows:

$\bar x=\frac{1}{n}\sum x=\frac{1}{30}\times 51702=1723.4\\\\s=\sqrt{\frac{1}{n-1}\sum (x-\bar x)^{2}}=\sqrt{\frac{1}{30-1}\times 232561.2}=89.55$

Construct a 95% confidence interval estimate for the population mean force as follows:

$CI=\bar x\pm z_{\alpha /2}\times\frac{s}{\sqrt{n}}$

$=1723.4\pm 1.96\times\frac{89.55}{\sqrt{30}}\\\\=1723.4\pm 32.045\\\\=(1691.355, 1755.445)\\\\\approx (1691, 1755)$

Thus, the 95% confidence interval estimate for the population mean force is (1691, 1755).

3 0

4 years ago

A baker is filling an order which consists of loaves of bread, bags of rolls, and small boxes of croissants. She includes 8 of e

dlinn [17]

Answer:

Step-by-step explanation:

6 0

3 years ago

In mid-day meal scheme 1/ 10 litre of milk is given to each student of a primary school. If 30 litres of milk are distributed ev

nirvana33 [79]

Answer:

300 students

Step-by-step explanation:

To know the number of students, we must divide the total amount of milk spent by the amount spent for each and in this way we will obtain the value we are looking for, like this (both have the same units of L, so there is no problem ):

30 / (1/10) = 300

that is to say that there are a total of 300 students

5 0

4 years ago