Adolphin swims 24 miles in 1.5 hours. the graph represents the speed of the sea lion. which
statement must be true?
sea lion's speed
the dolphin can travel the same distance as
the sea lion in 2 hours.
the sea lion travels faster than the dolphin.
distance traveled (miles)
the sea lion can travel 16 miles per hour.
the dolphin travels faster than the sea lion.
hours
done

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step-by-step explanation:

you have orange juice on wednesday. (idk why this is the answer)

step-by-step explanation:

irst, find the z score of a score of 80. this is given by the formula z = (x-u)/o, where x is the score, u is the mean, and o is the standard deviation. this gives

z = (80-78)/12 = 1/6 = .1667

now, find what percentile a z score of 1/6 correlates to in the normal distribution.

a z score of 1/6 = .1667 is equivalent to the 56.36th percentile of the distribution. so the probability a score is over this is 1-.5636 = .4364

the mean of a sample mean is equal to the original mean. however, the standard deviation of a sample mean is equal to the original standard deviation divided by the square root of n (sample size). so the new standard deviation is 12/sqrt(16) = 3.

the new z score is 80-78/3 = 2/3 = .667. this is equivalent to the 74.86th percentile. so the probability that the mean will be greater than this score is 1-.7486 = .2514.