7. The table below shows the probability distribution of the types of food purchased by students from the school cafeteria. What is the probability a student has purchased Caesar salad?

(2 points)
0.17
Suppose houses are available for purchase during construction of a new housing development. Two different types of houses are being built: rancher and colonial. The mean price of the ranchers is \$319,000 with a standard deviation of \$12,000. The mean price of the colonials is \$405,000 with a standard deviation of \$18,500.

8. Find the combined mean price of the two different types of houses. (2 points)
\$362,000

9. Find the combined standard deviation of the two different types of houses. (2 points)
\$22,051.0771 or \$22,051.08

10. The purchase price for the colonial houses is reduced by \$10,000. What would be the new mean for the colonial houses? (2 points)
\$357,000

11. If the purchase price for the colonial houses is reduced by \$10,000, how much would the standard deviation for the colonial houses change? (2 points)

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