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3 years ago

Need help ASAP due in 30 minuets

Mathematics

2 answers:

FromTheMoon [43]3 years ago

4 0

15% more likely to be on time.

valentina_108 [34]3 years ago

3 0

Wait, did you do this for all of the,

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Please help with this question

Elanso [62]

Answer:

bra no

Step-by-step explanation:

bra

4 0

3 years ago

The mean weight of trucks traveling on a particular section of I-475 is not known. A state highway inspector needs an estimate o

kaheart [24]

Answer:

The 95 percent confidence interval for the population mean is between 14.736 tons and 16.864 tons.

Step-by-step explanation:

We have the population's standard deviation, so we can find the normal confidence interval.

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

$\alpha = \frac{1-0.95}{2} = 0.025$

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 $1-0.025 = 0.975$ , so $z = 1.96$

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.

$M = 1.96*\frac{3.8}{\sqrt{49}} = 1.064$

The lower end of the interval is the sample mean subtracted by M. So it is 15.8 - 1.064 = 14.736 tons

The upper end of the interval is the sample mean added to M. So it is 15.8 + 1.064 = 16.864 tons

The 95 percent confidence interval for the population mean is between 14.736 tons and 16.864 tons.

4 0

3 years ago

How would I solve this and what operation do I use?

Marianna [84]

6 weeks is the least and use 46+14x=138

3 0

3 years ago

A baseball team score formed and 32 runs in 72 games how many runs did they score average per game

Mnenie [13.5K]

72 Divided by 32 is equal to 2.25, but you can't have one fourth of a run, so you would round it to the nearest run being three. The answer is Three runs per game.

8 0

4 years ago

<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B%20%7B5%7D%5E%7B%20-%202%7D%20%20%5Ctimes%209%7D%20%7B%20%7B2%7D%5E%7B4%7D%20%20%

Illusion [34]

Answer:

36(5)^-2.

Step-by-step explanation:

5^-2 * 9

= 9(5)^-2

2^4 * 4 ^ -3

= 2^4 + (2^2)^-3

= 2^4 * 2^-6

= 2^-2

So the answer is

9(5^)-2 / 2^-2

= 9(5)^-2 * 2^2

= 4*9(5)^-2

= 36(5)^-2.

7 0

3 years ago