PLS HELP On a standardized science test, the seniors at Fillmore High School have a mean score of 415 with a standard deviation of 90.

What is the probability that a random sample of 40 seniors has a mean score of at most 405? If necessary round your answer to the nearest hundredth.

The probability that a random sample of 40 seniors has a mean score of at most 405 is about
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80π/3 or about 83.775

step-by-step explanation:

since a cone is 1/3 of a cylinder, we need to find the base's area. since area = πr^2, we get 16π. then, multiplying this by 5, we get 80π. dividing by 3, since the cone's volume is 1/3 of that of a cylinder's, we get 80π/3.

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sample answer: you can determine whether each element of the domain is paired with exactly one element of the range. for example, if given a graph, you could use the vertical line test; if a vertical line intersects the graph more than once, then the relation that the graph represents is not a function.