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3 years ago

5 m per sec for 15 sec???

Mathematics

2 answers:

PilotLPTM [1.2K]3 years ago

6 0

Answer:

Hard questions

Step-by-step explanation:

Dimas [21]3 years ago

4 0

Answer:

I'm sorry but i don't understand your question

Step-by-step explanation:

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The number of hours that a nine month old baby sleeps at night are normally distributed with a population standard deviation of

natita [175]

Answer:

The margin of error is of 0.7123 hours.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.9}{2} = 0.05$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.05 = 0.95$ , so $z = 1.645$

Now, find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

Find the margin of error for a confidence interval for the population mean with a 90% confidence level.

We have that $\sigma = 1.5, n = 12$ . So

$M = 1.645*\frac{1.5}{\sqrt{12}} = 0.7123$

The margin of error is of 0.7123 hours.

3 0

3 years ago

How to answer it i also need the answers

aksik [14]

The answer is 230. You need to move the decimal 2 space to the right!

8 0

4 years ago

What is 1 1/2 x 2 1/4

mamaluj [8]

Answer:

28.875

Step-by-step explanation:idn and idc

5 0

3 years ago

Read 2 more answers

If (72)p = 76, what is the value of p? (5 points)

Korolek [52]

P=0.361 is the answer to this

7 0

3 years ago

1 kilogram

vlabodo [156]

Answer:

True

Step-by-step explanation:

For every kilogram, there are 1000 grams

3 0

3 years ago