2 years ago

A bag contains 25 marbles;10 black,13 red,and 2 blue. A marble is drawn from the bag at random.

1 answer:

3 0

For the answer to the question above asking to e<span>xplain why the events "getting a black marble" and "getting a red marble" are mutually exclusive.
</span>A marble can have only one color, so you cannot choose a marble that is both black and red. Therefore the events are mutually exclusive (cannot happen simultaneously)

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monitta

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3 years ago

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A class’s test scores are normally distributed if the average score 60 and the standard deviation is 7 choose the spots where th

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Answer:

Step-by-step explanation:

We are given that a class's test scores are normally distributed with an average score of 60.

We know that the curve of a normal distribution is symmetric about its mean.

60-14=46

60+14=74

Hence, the point 46 lies to the left of the mean and 74 lies to the right of the mean, and the two points have the same function value.