Causal models a. use the average of the most recent data values in the time series as the forecast for the next period. b. occur whenever all the independent variables are previous values of the same time series. c. relate a time series to other variables that are believed to explain or cause its behavior. d. provide evidence of a causal relationship between an independent variable and the variable to be forecast.

d. provide evidence of a causal relationship between an independent variable and the variable to be forecast.

Step-by-step explanation:

Estimating or Forecasting the value of the variables(independent variable) using the values of one or more independent variable and the data is based on the time is said to be Causal Model.

Thus, Option (d) is correct option only i.e. provide evidence of a causal relationship between an independent variable and the variable to be forecast.

step-by-step explanation: so we look at the formula un = a + (n-1)d

un is the amount of seats

n is the nth term aka row number

a is the original sequence/row number

d is the difference between each term

so in this a=22 d=6 and n can remain as n because we are simply formjng a rule

lets put these in the equation

un=22+(n-1)(6)

this is your answer to part a

however

lets double check that this is correct, we'll try putting it into the second term

un=a+(n-1)d

u2=22+(2-1)(6)

u2=22+6

u2=28

as the question said the second row has 28 seats so now we know the formula we made is correct.

as for part b

un=a+(n-1)

its asking us to find a row with 100 seats.

remember un was the amount of seata so all we do is substitute this in.

un=100 a=22 d=6

un=a+(n-1)d

100=22+(n-1)(6)

so now we simplify to find n which is the row number.

100-22=22+(n-1)(6)-22

78=(n-1)(6)

78/6=(n-1)(6)/6

13=n-1

13+1=n-1+1

14=n

so now we know that in the 14th row there is 100 seats.

hope this and that you understood! its my first time using the app or anyone out on here : p its also me to revise so a bunch! ask more questions if you dont understand ☺

i dont know

step-by-step explanation:

the reason i dont know is because i have not taken this class and for that reason i haven't learned this stuff

hope i could