Many factors may affect fans' decision to go to a ball game. Is it possible that fans prefer teams with an older pitching staff? a) Examine a scatterplot of Attend/Game and PitchAge. Check the conditions for regression. b) Do you think there is a linear association between Attendance and Pitcher Age? c) Compute and discuss the regression model.

A) The linearity conditions are satisfied.

b) Yes there is positive linear association because attendance per game increases then pitcher age also increases.

c) The pitcher age increases by 1 year the average attendance tend to increase by about 5511 fans.

Step-by-step explanation:

a)

We have to find scatter plot

First enter all data in excel

Select all data ----------> Click on Insert --------> Scatter ------->Click on first graph

We get( check the first attached for the excel computation)

Conditions.

A) The linearity conditions are satisfied.

b) Yes there is positive linear association because attendance per game increases then pitcher age also increases.

c) y : Dependent variable = attendance per game

x : independent variable = pitchers age

We can solve this question using excel.

First enter data into excel.

Click on Data -------> Data Analysis --------> Regression ------->

Input

Input Y Range : select y values

Input X Range :select values of x.

Output Range : select any empty cell

---------> ok

We get ( check the first attached for the excel computation)

The regression equation is

Attendance  = - 124506 +5511 x age

Test statistic for slope is 6.797

P-value for test statistic is 0.0000191

The pitcher age increases by 1 year the average attendance tend to increase by about 5511 fans.

step-by-step explanation:

i think something is missing in your question because y-1=(x-12) would not pass through the point (-4,-3). because if you replace x by -4 your are supposed to find y=-3 which is not the case her. if you replace x by -4 you find =-15.

i assume the right equation is y-1=1/4*(x-12) because this one is passing through both your points (if you are interested to know how i found that out i can tell you).

in this equation if i replace x by -4 i find y=-3 and if i replace x by 12, i find y=1 so the line representing this equation is passing through those 2 points.

then the standard form of the equation is finding an expression of y in function of x

y-1=1/4*(x-12)

y=x/4-3+1

y=x/4-2

hope that .

do you confirm there was a mistake in the question?

b. 6

step-by-step explanation:

we are given the table representing an exponential function.

we can see from the table that, as x is increasing, the value of y is increasing in the power of 6.

i.e. the following relation is obtained,

x = 1, y = 6

x = 2, y = 36 =

x = 3, y = 216 =

x = 4, y = 1296 =

x = 5, y = 7776 =

so, the geometric series obtained is .

thus, the common ratio is given by = = 6.

hence, the common ratio is 6.