3 years ago

The function y = 3x - 6 is defined for all values of y less than 12. Determine the value of x that corresponds to the upp

Mathematics

1 answer:

Vikentia [17]3 years ago

5 0

The answer is letter d

You might be interested in

Susan has been on a bowling team for 14 years. After examining all of her scores over that period of time, she finds that they f

elixir [45]

Answer:

Step-by-step explanation:

Let X be the random variable that represents a score of Susan. We know that X has a normal distribution with average score of 225 and a standard deviation of 13. For n = 16 games, the average score $\bar{X}$ has a normal distribution with mean of 225 and a standard deviation of $13/\sqrt{16}=13/4=3.25$ . Besides, the z-score related to 220 is (220-225)/3.25=-1.5385, and the z-score related to 228 is (228-225)/3.25= 0.9231. Therefore, we are looking the probability $P(220 < \bar{X} < 228) = P(-1.5385 < Z < 0.9231) = P(Z < 0.9231) - P(Z < -1.5385)$ = 0.76