If the mean is seven and the standard deviation is two, what value is three standard deviations to the right of the mean?

My Physics professor announced that top 18% will get A in the class.               Class mean is 72, and standard deviation is 6. To get the grade A, what score should I get at least?

After calculating the mean and standard deviation, how do we interpret the result, and when a variable look strange?

Suppose you are told that you scored  two standard deviations below the mean on a measure where the mean was 90 and the standard deviation was8. What is your score?

Mario's weekly poker winnings have a mean of $353 and a standard deviation of $67. Last week he won $185. How many standard deviations from the mean is that?

An incoming MBA student took placement exams in economics and mathematics. In economics, she scored 82 and in math 89. The overall results on the economics exam had a mean of 70 and a standard deviation of 7, while the mean math score was 69, with a standard deviation of 10. On which exam did she do better compared with the other students?

If a distribution has a mean of 46 and a standard deviation of 1, what value would be -2 standard deviations from the mean?

A person’s IQ must be in the upper 2% of the population to be considered into the Honor Society.  If the mean score is 100 and the standard deviation is 15, what score must a person have to qualify for the Honor Society?

A successful basketball player has a height of 6 feet 11 ​inches, or 211 cm. Based on statistics from a data​ set, his height converts to the z score of 5.17. How many standard deviations is his height above the​ mean?

Joe went bowling in two leagues. In the first league, the mean bowling score is 167 with a standard deviation of 44. In the second league the mean bowling score is 180 with a standard deviation of 36. If he bowls a game of 201 in both leagues, in which league is this score the best in comparison to other bowlers? Explain.