Use the following data set to answer the questions. 13 15
20
20 20 20 20 20 23 27 31
20
a. What is the mean?
b. What is the mode?
c. What is the median?
d. What fraction of the numbers in the data set are less than the median?
e. What fraction of the numbers in the data set are greater than the median?

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2

The magnitude, m, of an earthquake is defined to be m=log l/s, where i is the intensity of the earthquake (measured by the amplitude of the seismograph wave) and s is the intensity of a “standard” earthquake, which is barely detectable. what is the magnitude of an earthquake that is 1,000 times more intense than a standard earthquake? use a calculator. round your answer to the nearest tenth.

The following frequency table relates the weekly sales of bicycles at a given store over a 42-week period.value01234567frequency367108521(a) in how many weeks were at least 2 bikes sold? (b) in how many weeks were at least 5 bikes sold? (c) in how many weeks were an even number of bikes sold?