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3 years ago

Brainliest + 20 points to whoever helps!!!

Mathematics

1 answer:

Darya [45]3 years ago

8 0

Answer:

D. The standard deviation is known and n > 30.

Step-by-step explanation:

Your sample size is greater than 30.
Data points should be away from each other.
Your data should be commonly categorized.
Your data should be randomly picked from a population. Each item should have an equal chance of being selected.
The sample sizes should be equal.

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vovangra [49]

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Step-by-step explanation:

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3 years ago

Solve for 2.<br> -9x +5 < 17 AND<br> 13x + 25 < -1

Elena L [17]

Answer:

no solution

Step-by-step explanation:

-9x +5 < 17 AND 13x + 25 < -1

Solve each part separately and then put back together

-9x +5 < 17

Subtract 5 from each side

-9x+5-5< 17-5

-9x < 12

Divide each side by -9 remembering to flip the inequality

-9x/-9>12/-9

x > -4/3

and

13x + 25 < -1

subtract 25 from each side

13x +25-25 < -1-25

13x <-26

Divide by 13

13x/13 < -26/13

x <-2

There is no overlap so there is no solution

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3 years ago

Read 2 more answers

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3 years ago

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KonstantinChe [14]

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3 years ago

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nadya68 [22]

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3 years ago