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scoray [572]
3 years ago
13

Is this a function ? please explain your reasoning. someone please help me !!

Mathematics
1 answer:
Nimfa-mama [501]3 years ago
6 0

Answer:

yeah thats a function

Step-by-step explanation:

if you were to draw a vertical line through any point on that graph, you could tell that there would be no point above another, which makes this data set a function. basically, there must be no more than one y-value for every x-value in a data set for it to be considered a function.

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Lifetime of $1 Bills The average lifetime of circulated $1 bills is 18 months. A researcher believes that the average lifetime i
OLEGan [10]
<h2>Answer with explanation:</h2>

Let \mu be the population mean lifetime of circulated $1 bills.

By considering the given information , we have :-

H_0:\mu=18\\\\H_a:\mu\neq18

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It means the sample is large so we use z-test.

Sample mean : \overline{x}=18.8

Standard deviation : \sigma=2.8

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3 years ago
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