629.20/520=1.21
Powerof6V1.21= 1.0323
Rate of interest 3.23
Answer:
The engineer must verify and verify through a statistical inference that estimates and possible parameters may emerge, as well as determine what hypothesis tests should be performed to draw the most accurate conclusion.
Step-by-step explanation:
The engineer must assume that there may be more than one reasonable estimator for a different event or experiment; Something that could help you would be to perform an estimation of parameters, in that estimation it is required to know the properties of the estimators; that is to say that the closer the value of an estimator is to the real value of the parameter, it could be said that it is the most efficient or exact extimator.
Answer:

Step-by-step explanation:
GIVEN: A bank is offering you an introductory credit card promotion. Your interest for the first year is
. But, at the beginning of the
nd year your interest rate will go up to
. If you have an
balance on your card throughout both years.
TO FIND: difference in the monthly interest owed during year
and year
.
SOLUTION:
rate of interest for first year 
total amount on card 
interest earned in first year 


monthly interest owed 
rate of interest for first year 
total amount on card 
interest earned in first year 


monthly interest owed 
Difference in monthly interest owed during year
and year
