If a person received a test score that is in the top 16% of all test scores, the persons Z-score must be

a score of 105 is one standard deviation above the mean

the rule says that 68% of a normally distributed population lies within one standard deviation of the mean...half above the mean and half below

so 34% are within one standard deviation above the mean

this means that 16% are above that value

Step-by-step explanation:

300pi

step-by-step explanation:

question: how many people can she serve?

answer: she can serve 16.66666667 people. so she can only give 16 people a complete serving.

question: does she have enough ice cream for her guests?

answer: no. explanation: she only has enough for 16 people to have a full serving. however, she can give a 17th person a partial serving.