In order to estimate the typical amount of TV watched per day by students at her school of 932 students, a student has all of the students in her statistics class ( students) take a short survey, finding that, on average, students in her statistics class report watching hours of television per day.

1) Quantitative

2) a) Mean or Median

3) b) Bar graph

Step-by-step explanation:

The question is incomplete:

"In order to estimate the typical amount of TV watched per day by students at her school of 932 students, a student has all of the students in her statistics class (30 students) take a short survey, finding that, on average, students in her statistics class report watching 1.2 hours of television per day.

1 - Is the varlable categorical or quantitative?

2 - Identlfy two statistics that the student could use to summarize the variable.

a) Mean or Median b) Mean or Proportions c) Mean or Mode d) Median or Mode.

3 - Identify one graph that the student could use to summarize the variable.

a) Line graph b) Bar graph  c) Dotplot d) Pie chart e) Scatter Plot

1) The variable is quantitative as it is a number and we can perform meaningful numerical operations with it.

2) The mean is the most appropiate statistic to summarize the variable.

Proportions is not adequate.

Mode is not appropiate as we are probably dealing with a continous variable.

The second most appropiate is the median, as it is appropiate for continous values for the variable.

3) If he classifies the result in classes, he can chart the results in a bar graph.

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step-by-step explanation: vsfdvsfvd

a.   we have two

lines:   y = 4-x   and  

y = 8-x^-1

given two simultaneous equations that are both to be

true, then the solution is the points where the lines cross. the intersection is

where the two equations are equal. therefore the solution that works for both

equations is when

4-x = 8-x^-1

this is where the two lines will cross and that is the

common point that satisfies both equations.

b.   4-x = 8-x^-1

  x           4-x       8-x^-1

-3           7        

8.33

-2           6         8.5

-1           5         9

  0           4        

-

  1           3        

7

  2           2        

7.5

  3           1         7.67

the table shows that none of the x values from -3 to 3 is

the solution because in no case does

4-x = 8-x^-1

to find the solution we need to rearrange the equation to

find for x:

4-x = 8-x^-1

multiply both sides with x:

4x-x^2 = 8x-1

x^2+4x-1=0

x= -4.236, 0.236

therefore there are two points that satisfies the

equation.

find y:  

x=-4.236

y = 4-x   = 4 – (-4.236)

= 8.236

y = 8-x^-1 =   .236)^-1

= 8.236

x=0.236

  y = 4-x   = 4 – (0.236) = 3.764

y = 8-x^-1 =   8-(0.236)^-1

= 3.764

thus the two lines cross at 2 points:

(-4.236, 8.236) & (0.236, 3.764)

c.   to solve

graphically the equation 4-x = 8-x^-1

we would graph both lines: y = 4-x   and   y

= 8-x^-1

the point on the graph where the lines cross is the

solution to the system of equations.

just graph the points on part b on a cartesian coordinate

system and extend the two lines.   the

solution is, as stated, the point where the two lines cross on the graph.

step-by-step explanation:

mark brainliest!