1. Consider the following raw data, which is the result of selecting a random sample of 20 condominium sales in a particular development.  The sale prices are given in thousands of dollars ($1,000s).

a. Compute the mean, median, mode, and standard deviation, Q₁, Q₃, Min, Max for the above sample data on sale prices.

b. In the context of this situation, interpret the Median, Q₁, and Q₃.

2. (TCO B) Consider the following data on newly hired employees in relation to which part of the country they were born and their highest degree attained.

If you choose one person at random, then find the probability that the person

a. Is from the Midwest.

b. Is from the South and has a PHD.

c. Is from the West, given that person only holds a MS degree.

3. Historically, 70% of your customers at Rodale Emporium pay for their purchases using credit cards.  In a sample of 20 customers, find the probability that 

a. Exactly 14 customers will pay for their purchases using credit cards.

b. At least 10 customers will pay for their purchases using credit cards.

c. At most 12 customers will pay for their purchases using credit cards.

4. Pharmacies continually monitor their prescription filling process. A local pharmacy has noted that the time to fill a prescription for a generic antibiotic is normally distributed, with a mean of 13.3 minutes and a standard deviation of 2.8 minutes.

a. Find the probability that a prescription for a generic antibiotic takes at least 10 minutes to fill.

b. Find the probability that the prescription for a generic antibiotic takes between 12 and 15 minutes to fill.

c. The slowest 20% of prescription fills result in a special discount to the customer. How long must a prescription fill for a generic antibiotic take in order to qualify for this discount?

Transcribed Image Text:

131 142 120 135 126 153 135 131 126 133 147 137 130 126 140 138 144 132 132 138 HS BS MS PHD Total East Midwest20 18 South West Total 5 8 6 221 6 22 72 16 29 189