The quadratic regression equation that models these data is y = –0.34x2 + 4.43x + 3.46. using the quadratic regression equation, what was the predicted profit in year 10?

13.76

Step-by-step explanation:

We want year 10; this means we substitute 10 in place of x:

y=-0.34(10²)+4.43(10)+3.46

y = -0.34(100)+4.43(10)+3.46

y = -34+44.3+3.46 = 13.76

Profit in year 10 is 13.76 million dollars.

Step-by-step explanation:

The quadratic regression equation that models the data is y = -0.34x² + 4.43x + 3.46

Here "y" defines the profit in the year and x is the number of years.

We have to calculate the predicted profit in year 10.

We can get the predicted profit from the regression equation by putting the value x= 10.

y = -0.34×(10)² + 4.43(10) + 3.46

  = -34 + 44.3 + 3.46

  = 13.76

Therefore profit generated will be 13.76 million dollars.

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.

ok

step-by-step explanation: