Does this graph represent a function? Why or why not ?

Mathematics

2 answers:

frosja888 [35]3 years ago

7 0

Answer:

Step-by-step explanation:

One way to see if the graph is a function or not is by seeing if there is one output for every input. If the graph of the line touches a vertical line more than once, it is not a function, as this means there are two outputs for an input. For example, if a graph has a points that say (7,5) and (7, 10), the graph is not a function as 7 repeats more than once. Hope this helped!

pashok25 [27]3 years ago

6 0

B. Yes, because it passes the vertical line test.

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. If IQ scores are normally distributed with a mean of 100 and a standard deviation of 5, what is the probability that a person

bulgar [2K]

Answer:

2.28% probability that a person selected at random will have an IQ of 110 or greater

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 100, \sigma = 5$