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irina [24]
3 years ago
12

Between which two consecutive integers does 85 square lie

Mathematics
1 answer:
AnnZ [28]3 years ago
5 0

Answer:

:)

Step-by-step explanation:

9 & 10

go add the snap carmel.bratz

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The level of dissolved oxygen (DO) in a stream or river is an important indicator of the water's ability to support aquatic life
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Answer:

a) It is most appropiate to apply t procedures with this sample because the population standard deviation is unknown. We have to estimate it from the sample standard deviation.

b) There is no enough evidence to claim that disolved oxygen level is below 5 mg/l.

c) As the null hypothesis was not rejected, the only error we could have made is a Type II error.

This Type II error is made when fail to reject the null hypotesis even when the alternative hypothesis is true.

In this context, it would mean that the aquatic life is really at risk (dissolved oxygen levels below 5 mg/l), but because the sample results combined with its size were not giving enough evidence to prove the claim.

Step-by-step explanation:

b) We have to perform a hypothesis test on the mean, at a significance level of 0.05.

The null and alternative hypothesis are:

H_0:\mu\geq 5\\\\H_a: \mu

The sample mean is 4.77 and the sample standard deviation is 0.94.

The sample size is 15, so the degrees of freedom are:

df=n-1=15-1=14

The t-statistic is:

t=\frac{\bar x-\mu}{s/\sqrt{n}} =\frac{4.77-5}{0.94/\sqrt{15}}= \frac{-0.23}{0.242}=-0.95

For a t=0.95 and df=14, the P-value is P=0.18.

This P-value is bigger than the significance level, so the null hypothesis is failed to be rejected.

There is no enough evidence to claim that disolved oxygen level is below 5 mg/l.

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How are exponents and logarithms related? give an example with you explanation
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Exponents and logarithms are inverse functions, which means that exponents are the way to "undo" logarithms and logarithms are what you use to "undo" exponents. exponents tell you how many times you have to multiply a value and logarithms ask which exponent you need to use to get a specified value. exponential equations are used in a lot of scientific fields; for example, in biology, they're used to calculate the half-life of organisms. they can also be used to estimate the growth of a population. additionally, the richter scale, which measures the magnitude of earthquakes, uses logarithms.
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Answer:where’s the gobba goop

Step-by-step explanation:

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Answer:

3. Add all the number toegther, then divide by the number of numbers present.

Step-by-step explanation:

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