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3 years ago

I need help fasttt with work

Mathematics

2 answers:

zysi [14]3 years ago

7 0

Answer:

I think the answer is 19.9 if that's wrong I'm so sorry

Vlad [161]3 years ago

6 0

Answer:

-19.9 ft.

Step-by-step explanation:

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Need help Please Thank u

Volgvan

Answer:

i think its b

Step-by-step explanation:

4 0

3 years ago

A simple random sample of 100 men is chosen form a population with mean height 71 in and standard deviation 2.5 in. What is the

ankoles [38]

Answer:

2.28%

Step-by-step explanation:

The z score is used to determine how many standard deviations that the raw score is above or below the mean. If the z score is positive then the raw score is above the mean and if it is negative then it is below the mean. It is given by:

$z=\frac{x-\mu}{\sigma}\\ \\\mu = mean, \sigma=standard\ deviation,x=raw\ score\\\\For\ a\ sample\ n\\\\z=\frac{x-\mu}{\sigma/\sqrt{n} }\\\\For\ x$

5 0

3 years ago

A health magazine reported that 27% of adult males smoke cigarettes. A competing magazine thinks this claim is false. To test th

andre [41]

Answer:

a) what is the point estimate used to create this confidence interval?

[a] 0.22

[b] 0.28

[c] 0.26

[d] 0.25 <-----------------------------

b) what is the margin of error used to create this confidence interval?

[a] .06

[b] .03 <-----------------------------

[c] .035

[d] .055

c) based on the confidence interval, it is plausible that the true proportion of adult males who smoke cigarettes is 27%?

[a] yes <-------------------------------

[b] no

Step-by-step explanation:

8 0

3 years ago

Which equation gives the number of half inches that are in 78 7 8 inch?

Nikolay [14]

7/8 ÷ 1/2 = 7/4. 1/2 ÷ 7/8 = 16/7

6 0

3 years ago

How can 2 high speed collision cars do more damage than low collision cars?

Margarita [4]

Low collision makes less damage because of its collision warning and reflexes

8 0

3 years ago