Simplify the expression 9^7/ 9^9 60 points

Mathematics

1 answer:

KATRIN_1 [288]1 year ago

5 0

Answer:

1/9^2

Step-by-step explanation:

simplify

9^(7-9)

simplify further

9^-2

simplify even more

1/9^2

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Assume a recent sociological report states that university students drink 4.10 alcoholic drinks per week on average, with a stan

yulyashka [42]

Answer:

4.10

0.17

Step-by-step explanation:

From the question, we know that

A recent sociological report stated that university students drink 4.10 alcoholic drinks per week on average, with a standard deviation of 1.9101.

Also, we're tasked with finding the mean and standard deviation of the sampling distribution of the sample mean alcohol consumption.

To find the mean of the sampling distribution, we take the sample mean of the same of that university students as a direct substitute. This then means that the mean of the sampling distribution of the sample mean alcohol consumption is 4.10 alcoholic drinks per week on average.

On the other hand, the standard deviation of the sampling distribution of the sample mean alcohol consumption is taken to be the division of the standard deviation of the sample mean. Mathematically, we have

Standard Deviation, S = 1.9101 / √125

Standard Deviation, S = 1.9101 / 11.18

Standard Deviation, S = 0.17

Therefore, the Standard Deviation is 0.17

4 0

3 years ago

Read 2 more answers

There are 6 groups of 3 people waiting to go on the underground ride. Each car can take 4 people. how many cars do you need?

Sliva [168]

6 groups of 3 6 times 3 which equals 18
and 18 divided by 4 is 4.5 so it takes 5 cars.

5 0

3 years ago