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3 years ago

8

True or false? when calculating a confidence interval for one sample with a continuous outcome and the sample contains 30 or few

er individuals, then a t-score should be used in place of a z-score.

1 answer:

wolverine [178]3 years ago

3 0

The answer to your question is false

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September 6 is a Read Book Day.Polina read 5 times as many pages as Marcus read.Together,the read 108 pages.How many pages did e

Gemiola [76]

Answer:

The number of pages that Polina read was 90 and the number of pages that Marcus read was 18

Step-by-step explanation:

Let

x -----> number of pages that Polina read

y ----> number of pages that Marcus read

we know that

x+y=108 ----> equation A

x=5y -----> equation B

substitute equation B in equation A and solve for y

$5y+y=108\\6y=108\\y=18$

Find the value of x

$x=5y -----> x=5(18)=90$

therefore

The number of pages that Polina read was 90 and the number of pages that Marcus read was 18

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3 years ago

Ethan invested £500 in the bank for 2 years.

Anon25 [30]

Answer:

Step-by-step explanation:

I=PRT/100

40=(500XRX2)/100

R=(40X100)/500X2

R=4000/1000

R=4 percent/annum

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3 years ago

PLZ HELP ASAP!!!!!!!,

lilavasa [31]

The answer to your question is 10 seconds. I know this because:

distance divided by speed=time
let t=time
t=2*6(30/36)=10
t=10
So, it took Boris a total of 10 seconds to run up the out of service elevator.

Hope this helps!

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maxonik [38]

Answer: A

Step-by-step explanation:

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Simplify the expression 3/4÷-5/6

Natalka [10]

Answer: the answer to this is 9/10

Step-by-step explanation:

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