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Alina [70]
3 years ago
15

A random sample has been taken from a population. A statistician, using this sample, needs to decide whether to construct a 90 p

ercent confidence interval for the population mean or a 95 percent confidence interval for the population mean. How will these intervals differ?
Mathematics
1 answer:
AURORKA [14]3 years ago
5 0

Answer:

Step-by-step explanation: a confidence interval is a range that shows how precise the measurement is. if a statistician decides to construct using 90 percent C I over a 95% C I, it tells you that you have 10% chance of being wrong rather than 5% chance of being wrong while using the 95%. Also a 90 percent confidence interval would be narrower than a 95 percent confidence interval

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Deon is riding his bicycle. He rides for 7 hours at a speed of 22.4 kilometers per hour. For how many kilometers does he ride
salantis [7]
By hypothesis, Deon is riding at a speed of 22.4 kilometers per hour. So each hour, he completes 22.4 km.

If he rides for 7 hours, he completes 22.4 * 7 = 156.8 km

So in 7 hours, he rides 156.8 kilometers.

Hope this helps! :)
6 0
4 years ago
10 POINTS!!! PLEASE ANSWER SOON! THANK YOU!
Aloiza [94]

The answer would be 5.291 10 to the power of 12

5 0
3 years ago
Help pls and fast<br> 21x+1+26=28
Naya [18.7K]
X=1/21 that the answer
8 0
3 years ago
Read 2 more answers
Uncle Drew scored 28 points in 5 5/6 end fraction minutes during a game of basketball. How many points did he average per minute
8090 [49]

Answer:

Ok so I think the answer is 4.8 points per minute

Step-by-step explanation:

Why because Uncle Drew scored 28 points in 5 \frac{5}{6} minutes. We have to convert the mixed fraction first:

t = 5 \frac{5}{6}=\frac{5\cdot 6+5}{6}=\frac{35}{6}

So, the time is 35/6 minutes.

In order to find the number of points he scored in a minute, we have to divide the total number of points by the number of minutes, so:

mean = \frac{28}{35/6}=28 \cdot \frac{6}{35}=4.8

So, he scored 4.8 points per minute.

I hope you foundthis helpful.

3 0
3 years ago
Read 2 more answers
Alex has five rolls of shelf paper that is 800 cm long.She wants to use the to line the 1-meter wide shelves in her pantry. How
jeyben [28]

Answer:

Alex can line eight 1-meter wide with the paper.

Step-by-step explanation:

- Alex has five rolls of shelf paper that is 800cm.

- She wants to use the paper to line the 1-meter wide shelves in her pantry.

- We want to determine how many 1-meter wide she can line with the paper.

- First, we know that

100cm = 1m

- we need to determine how many meters are in 800cm.

100cm = 1m

800cm = xm

100x = 800

x = 800/100

= 8

Therefore, 800cm is equivalent to 8m

Alex can line eight 1-meter wide with the paper.

5 0
3 years ago
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