The range of the correlation coefficient is between -1 and +1. true false

True

Step-by-step explanation:

The correlation coefficient is a number between -1 and +1. When the correlation is -1 indicates that when one variable increases the other variable decreases. When the correlation is +1 indicate a positive correlation then when one variable increses the othe one increases to. And when the correlation is 0 the variable are not correlated.

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)

tangent

step-by-step explanation: