A customer satisfaction report on a retail website indicates the products (SKU), pricing ($) as well as review satisfaction score (%) for five different types of flashlights. Product (SKU) Price ($) Score (%)
PD36R 9 29
E35V3 19 44
E12V2 28 61
E03R 34 83
LD30 60 85

Required:
a. Compute and write down the estimated regression equation.
b. What is value of the correlation coefficient

Consider the following information on stocks a, b, c and their returns (in decimals) in each state: state prob. of state a b c boom 20% 0.27 0.22 0.16 good 45% 0.16 0.09 0.07 poor 25% 0.03 0 0.03 bust 10% -0.08 -0.04 -0.02 if your portfolio is invested 25% in a, 40% in b, and 35% in c, what is the standard deviation of the portfolio in percent? answer to two decimals, carry intermediate calcs. to at least four decimals.

Which of the following events could increase the demand for labor? a. an increase in the marginal productivity of workers b. a decrease in the amount of capital available for workers to use c. a decrease in the wage paid to workers d. a decrease in output price

Atelephone call center uses three customer service representatives (csrs) during the 8: 30 a.m. to 9: 00 a.m. time period. the standard service rate is 3.0 minutes per telephone call per csr. assuming a target labor utilization rate of 80 percent, how many calls can these three csrs handle during this half-hour period?