An electrical company claims that the average life of the bulbs it manufactures is 1,300 hours with a standard deviation of 260 hours. if a random sample of 110 bulbs is chosen, what is the probability that the sample mean will be: a. greater than 1,160 hours?

Write each expression in exponential form and find its value. 2 x 2 x 2 x 2

Scott harris can invest $7,000 in a 1-year cd that earns interest at an annual rate of 4 percent compounded monthly. the amount per $1.00 is 1.040742. he can also invest $7,000 in a 1-year cd at annual rate of 4 percent compounded quarterly. the amount per $1.00 is 1.040604. what is the difference in the amount of interest earned for each investment? a) $0.96 b) $0.81 c) $0.87 d) $0.88

How do businesses a country's economy? a. by investing in goods and services b. by increasing the unemployment rate c. by making profits