Find the mean of the data summarized in the given frequency distribution. 1) The manager of a bank recorded the amount of time each customer spent waiting in line during pea 1)
business hours one Monday. The frequency distribution below summarizes the results. Find the me
waiting time. Round your answer to one decimal place.
Waiting time Number of
(minutes) customers
0-3
9
4-7
11
8 - 11
13
12 - 15
5
16 - 19
7
20-23
3
24 - 27
1
A) 9.9 min
B) 7.0 min
C) 13.5 min
D) 9.7 min

Answer asap ill give ! ’ a sample of radioactive material decays over time. the number of grams, y , of the material remaining x days after the sample is discovered is given by the equation y = 10(0.5)^x. what does the number 10 represents in the equation? a. the half-life of the radioactive material, in days b. the amount of the sample, in grams, that decays each day c. the time, in days, it will take for the samples to decay completely d. the size of the sample, in grams, at the time the material was discovered