Consider the following set of scores from a physics test. Give the mean of the scores.

Consider the following set of scores from a physics test. Give the mean of the scores.

Sally's numeric grade in her economics class is determined by four equally weighted hourly tests, a midterm weighted twice as much as an hourly test, and a final weighted three times as much as an hourly test. The highest score possible on each is 100.

Going into finals week, Sally's hourly test scores are 89, 85, 84, and 87, and her midterm score is 93. What must Sally make on her final at minimum in order to average 90 or more for the term?

Sally's numeric grade in her economics class is determined by four equally weighted hourly tests, a midterm weighted twice as much as an hourly test, and a final weighted three times as much as an hourly test. The highest score possible on each is 100.

Going into finals week, Sally's hourly test scores are 89, 85, 84, and 87, and her midterm score is 93. What must Sally make on her final at minimum in order to average 90 or more for the term?

David's course score in a chemistry course is the mean of five tests. He has scored and . What must he score on the fifth test to be assured of a course score of ?

David's course score in a chemistry course is the mean of five tests. He has scored and . What must he score on the fifth test to be assured of a course score of ?

What is the mean of the set below?

Consider the data set

.

For what value of does this set have a mean of ?

What is the mean of the set below?

Consider the data set

.

For what value of does this set have a mean of ?