Suppose your statistics instructor gave six examinations during the semester. you received the following grades (percent correct): 92, 70, 84, 87, 90, and 75.to compute your final course grade, the instructor decided to randomly select two exam scores, compute their mean, and use this score to dtermine your final course grade.

Average of final course grade is 83.

Step-by-step explanation:

Given : Suppose your statistics instructor gave six examinations during the semester. You received the following grades (percent correct):

92, 70, 84, 87, 90, and 75.

To find : Compute their mean, and use this score to determine your final course grade ?

Solution :

Mean is defined as the total data divide by number of data.

Therefore, Average of final course grade is 83.

e^-kt = n/n0 = 0.79  

-kt = ln 0.79  

t = - ln 0.79/0.0001  

= 2357 years

step-by-step explanation:

the answer is b.

64

step-by-step explanation:

c=2πr=2·π·8≈64