Determining percentages of calls which are completed

Assignment Help Basic Statistics

Reference no: EM1315297

Q1) Fix-It Copiers advertises mean time of 100 minutes for office calls with standard deviation of 25 minutes. What percentages of calls are completed?

a) Between 100 and 120 minutes?

b) In less than 120 minutes?

c) In less than 60 minutes?

d) Between 120 and 150 minutes?

e) Between 60 and 120 minutes?

f) Twenty percent of their jobs take more than how much time?

Q2) A certain printer cartridge has illustrated the mean time usage of 9 hours and a standard deviation of 22 minutes. What time usage guarantee (in hours) must the manufacturer advertise to make sure that only 4% of cartridges fail to meet guaranteed time usage?

Reference no: EM1315297

Questions Cloud

Estimating 99 percent confidence interval : Develop a 99 percent confidence interval for the population proportion.

Graphical description of dead weight loss of monopolist : Illustrate in the graph below the deadweight loss (DWL) that would result if this monopolist were allowed to operate as a profit maximizing firm without regulation.

Good weather which improves crop production : Unusually good weather which improves crop production also a major oil discovery are examples of unexpected supply shocks in the economy

What is the tension in the rope : Two blocks are connected by a string. The smooth inclined surface makes an angle of 35 degrees with the horizontal, and the block on the incline has a mass of 5.70 kg. The mass of the hanging block is m= 2.90 kg. Find the direction of the hanging blo..

Determining percentages of calls which are completed : Fix-It Copiers advertises mean time of 100 minutes for office calls with standard deviation of 25 minutes. What percentages of calls are completed?

Influences affecting foreign exchange rates : Elucidate how absolute also comparative advantages were used in your simulation. Elucidate the influences affecting foreign exchange rates.

Half angle formula to find the exact value : Half angle formula to find the exact value.

Whether mean is greater than large sample test : To determine whether the mean is greater than 16 ounces using large sample test.

Price and quantity and profits of monopolist : Impact of technology advance a monopolist has the following demand function: Solve for the price and quantity that the monopolist would choose to minimize its profit. And also calculate the resulting profit.

User Account

All Pages