10 points 6. The table below represents the proportional relationship between the
number of tickets purchased for a concert and the total cost of the
tickets. Using the relationship from the table, what would be the total
cost of 4 concert tickets? *
23
Number of Tickets Purchased
1
3
7
Total Cost of Tickets
$22.50
$67.50
$157.50
A. $45.00
B. $67.50
C. $90.00
Ο Ο
D. 202.50

Farmers know that driving heavy equipment on wet soil compresses the soil and injures future crops. here are data on the "penetrability" of the same type of soil at two levels of compression. penetrability is a measure of how much resistance plant roots will meet when they try to grow through the soil. compressed soil 2.85 2.66 3 2.82 2.76 2.81 2.78 3.08 2.94 2.86 3.08 2.82 2.78 2.98 3.00 2.78 2.96 2.90 3.18 3.16 intermediate soil 3.17 3.37 3.1 3.40 3.38 3.14 3.18 3.26 2.96 3.02 3.54 3.36 3.18 3.12 3.86 2.92 3.46 3.44 3.62 4.26 use the data, omitting the high outlier, to give a 95% confidence interval for the decrease in penetrability of compressed soil relative to intermediate soil. compute degrees of freedom using the conservative method. interval: to