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3 years ago

Drag the dots to plot (7 1/2, -2) (-3,7) and (2,0)

Mathematics

1 answer:

kirill115 [55]3 years ago

4 0

Step-by-step explanation:

7 1/2 = 7 + 1/2 = 14/2 + 1/2 = 15/2 = 7.5

check the attached picture.

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A zookeeper predicted the weight of a new baby elephant to be 230 pounds when I was born the elephant actually weigh 262 pounds

insens350 [35]

Answer:

13.9%

Step-by-step explanation:

Given data

Expected weight = 230 pounds

Actual weight= 262 pounds

Required

The percent error

Error= Actaul- expected/ expected *100

Error= 262-230/230*100

Error=32/230*100

Error=0.139*100

Error=13.9%

Hence the error is 13.9%

5 0

2 years ago

7) Will you ever get 100% red M&M's in a packet? Explain your answer.

andreev551 [17]

No. A machine dispenses all the colors on a conveyor belt that mixes all the available colors.

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2 years ago

Two cars leave the same place at the same time, but drive in opposite directions along a straight road. one car averages 35 mi/h

Goshia [24]

As we do not know the other cars avg speed we can not tell the answer. Please repeat the question.

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3 years ago

A new gym member wants to burn 525 calories during the first workout and prefers the stationary bike but is considering doing ae

S_A_V [24]

Sounds like you’re missing a piece in this problem

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3 years ago

5. A study found that the average time it took a person to find their dream home was 5.9 months. If a sample of

solong [7]

Answer:

The 95% confidence interval of the mean time it took a person to find their dream home is between 5.64 months and 6.16 months.

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:

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

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.

$M = 1.96\frac{0.8}{\sqrt{36}} = 0.26$

The lower end of the interval is the sample mean subtracted by M. So it is 5.9 - 0.26 = 5.64 months

The upper end of the interval is the sample mean added to M. So it is 5.9 + 0.26 = 6.16 months.

The 95% confidence interval of the mean time it took a person to find their dream home is between 5.64 months and 6.16 months.

4 0

3 years ago