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Asked Sep 10, 2019
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Expert Answer

Step 1

Given information:

The table is shown below:

 

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Lead Usage in Paint Lead usage, u (thousand tons) Year 1940 70 1950 35 1960 10 1970 0.01 1980

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Step 2

Calculation:

a)

 

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TI83 Steps Step 1 Press the button STAT and select "Edit" by pressing the key 1. L2 L3 L1 L1(1) Now, Enter the data in L1and L2. Here, L1represents the Year and L2 represents Lead Usage. Step 2 L2 IL3 1940 1950 1960 1970 1980 70 35 10 01 L1 =1940, 1950, 1. Step 3 Press the button "2nd" and then "Y=". STAT PLOTS 1:Plot1...0ff L1 L2 2: Plot2..Off LL1 3:Plot3..Off L2 LaL1 L2 44Plotsoff Step 4: Now, Press the key 1and then set the plot "ON". Set the viewing window as "Z0OMSTAT"

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Step 3

From the aboce graph, the quadratic model fit the table data...

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Ti83 Steps Step1 Press the button STAT and select "Edit" by pressing the key 1. L2 IL3 L1 L1(1)= Now, Enter the data in L1 and L2. Here, L1represents the Year and L2 represents Lead Usage. Step 2 L2 L3 70 35 10 01 L1 5, 15, 25, 35,. ... Press the button "2nd" and then "Y=". STAT PLOTS 1:Plot..off L1 L2 2: Plot2..Off LL1 3:Plot3...Off LaL1 L2 44Plots0ff Step 3: L2 Now, Press the key 1and then set the plot "ON". Set the view ing window as "Z0OMSTAT" Step 4:

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