2 years ago

First responder in under 2 minutes gets brainly

Mathematics

2 answers:

katrin [286]2 years ago

6 0

Answer:

Step-by-step explanation:

The x's can not completely cancel each other out so they are still included but you have to divide the numbers, exponents and whole numbers.

mash [69]2 years ago

3 0

Answer:

first one

Step-by-step explanation:

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Use the confidence interval to find the estimated margin of error. Then find the sample mean. A biologist reports a confidence i

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Complete Question

A biologist reports a confidence interval of (3.5,4.9) when estimating the mean height (in centimeters) of a sample of seedlings. What is the estimated margin of error and the sample mean?

Answer:

The margin of error is $E = 0.7$

The sample mean is $\= x = 4.2$

Step-by-step explanation:

from the question we are told that

The upper limit is $k = 4.9$

The lower limit is $r = 3.5$

Generally the margin of error is mathematically represented as

$E = \frac{k - r}{ 2}$

$E = \frac{ 4.9 - 3.5 }{2}$

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Generally the sample mean is mathematically evaluated as

$\= x = k - E$

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