Solve the problem.A data set consists of 80 test scores. Over a long period it has been found that the mean and standard deviation for these scores are known and that the scores are normally distributed. How many scores within this data set should lie within one standard deviation of the mean? Round your answer to the nearest whole number.
A. 27
B. 60
C. 76
D. 55
Answer: D
Mathematics
You might also like to view...
Evaluate the integral.
A. 
? cos 10
B. 
?2 cos 10
C. 
? cos 10
D. 
?2 cos 10
Mathematics
Find a set of parametric equations for the rectangular equation.y = x4 - 4
A. x = t2; y = t2 - 4 B. x = t; y = t2 - 4 C. x = t2; y = t4 - 4 D. x = t; y = t4 - 4
Mathematics
Graph the piecewise-defined function.g(x) = 
A. 
B. 
C. 
D. 
Mathematics
Evaluate the expression for the given values of the variables.
for x = 
, y = - 
A. - 
B. - 
C. - 
D. - 
Mathematics