What is the value of x ?

Mathematics

2 answers:

klemol [59]2 years ago

7 0

Answer:

the letter "x" is often used in algebra to mean a value that is not known yet. It is called a 'varaible' or sometimes unknown.

kogti [31]2 years ago

6 0

Answer:

It is 65, B

Step-by-step explanation: because 180-115=65 tell me if you dont get it

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siniylev [52]

Answer:

19 beers must be sampled.

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:

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This means that $\sigma = 0.26$

If we want to be 90% confident that the sample mean beer temperature is within 0.1 degrees of the true mean temperature, how many beers must we sample?

This is n for which M = 0.1. So

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