On two of Mark's math tests, he scored 75 and 83. Mark wants to have a mean score of 84. What does Mark have to score on his next test to have a mean of 84?

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.

Alex measured the length of an item to be 3.7 cm. the actual length is 3.5 cm. what is alex’s percent error?

For a science project, a high school research team conducted a survey of local air temperatures. based on the results of the survey, the found that the average temperatures were around 10 degrees higher than expected. this result was wrong. the trouble with the survey was that most of the locations were exposed to direct sunlight and located over asphalt or sand, which resulted in higher temperatures than normal. this is a classic example of an error in which phase of inferential statistics?