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luda_lava [24]
2 years ago
8

A simple random sample is drawn from a normally distributed population, and when making a statistical inference about the popula

tion mean, the margin of error is found to be 5.9 at a 95% level of confidence. If the mean of the sample is 18.7, what is the 95% confidence interval for the population mean?
Mathematics
2 answers:
DiKsa [7]2 years ago
3 0
<span>To find the confidence interval, add and subtract the margin of error from the mean. With mean 18.7 and margin of error 5.9, you have 95% confidence the answer is between 12.8 and 24.6.</span>
V125BC [204]2 years ago
3 0

Answer:

B. 18.7 ± 9.7

Step-by-step explanation:

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stellarik [79]

Answer:

1.        t = 0.995 s

2.       h = 15.92  ft

Step-by-step explanation:

First we have to look at the following formula

Vf = Vo + gt

then we work it to clear what we want

Vo + gt = Vf

gt = Vf - Vo

t = (Vf-Vo)/g

Now we have to complete the formula with the real data

Vo = 32 ft/s      as the statement says

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g = -32,16 ft/s²        it is a known constant, that we use it with the negative sign because it is in the opposite direction to ours

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we solve and ...

t = 0.995 s

Now we will implement this result in the following formula to get the height at that time

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4 0
2 years ago
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Answer:

C

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the blueprint for landscaping a yard has a scale of 1/2" to1 foot. if the blueprint is a rectangle 18 inches by 22 inches,what a
bazaltina [42]
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3 years ago
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