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3 years ago

What is the square root of 1026?

Mathematics

1 answer:

I am Lyosha [343]3 years ago

4 0

The answer is 32.03. but if it was 1024 the answer would be 32

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A youth basketball has a diameter of about 8.75 inches. what is the volume of air, in cubic inches, that can fill the basketball

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Answer:

this took hella long to do but it's B

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3 years ago

A drawer contains a dozen unmatched brown socks and a dozen unmatched black socks. how many socks must someone take out to ensur

krok68 [10]

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3 years ago

5 (2x-4)-3 (x-2)=4x-2

ipn [44]

Answer:

Step-by-step explanation:

Year it’s the exponents

3 0

4 years ago

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Assume the sample variances to be continuous measurements. Find the probability that a random sample of 25observations, from a n

konstantin123 [22]

Answer:

a) $P(4S^2 > 4*9.1) = P(\chi^2_{24} >36.4) = 0.0502$

b) $P(13.848$ Step-by-step explanation:

Previous concepts

The Chi Square distribution is the distribution of the sum of squared standard normal deviates .

For this case we assume that the sample variance is given by $S^2$ and we select a random sample of size n from a normal population with a population variance $\sigma^2$ . And we define the following statistic:

$T = \frac{(n-1) S^2}{\sigma^2}$

And the distribution for this statistic is $T \sim \chi^2_{n-1}$

For this case we know that n =25 and $\sigma^2 = 6$ so then our statistic would be given by:

$\chi^2 = \frac{(n-1)S^2}{\sigma^2}=\frac{24 S^2}{6}= 4S^2$

With 25-1 =24 degrees of freedom.

Solution to the problem

Part a

For this case we want this probability:

$P(S^2 > 9.1)$

And we can multiply the inequality by 4 on both sides and we got:

$P(4S^2 > 4*9.1) = P(\chi^2_{24} >36.4) = 0.0502$

And we can use the following excel code to find it: "=1-CHISQ.DIST(36.4,24,TRUE)"

Part b

For this case we want this probability:

$P(3.462 < S^2$

If we multiply the inequality by 4 on all the terms we got:

$P(3.462*4 < 4S^2 < 4*10.745)= P(13.848< \chi^2$ And we can find this probability like this: $P(13.848$ And we use the following code to find the answer in excel: "=CHISQ.DIST(42.98,24,TRUE)-CHISQ.DIST(13.848,24,TRUE)"

8 0

3 years ago

Mark's computer weighs 35.769 pound

andriy [413]

It would be 35.77. The 6 is in the hundredths place, so you look to the number to its right. If the number is 0-4, keep the number the same. If it's 5-9, round up.

7 0

3 years ago

Read 2 more answers