Find percentage change in the required sample size

Assignment Help Mathematics

Reference no: EM1321679

Question: The Longmont Computer Leasing Company leases computers & peripherals like laser printers. The printers have a counter that keeps track of the number of pages printed. The company wishes to estimate the mean number of pages printed. The company wishes to estimate the mean number of pages that will be printed in a month on its leased printers. The plan is to select a random sample of printer & record the number of each printer’s counter at the beginning of May. Then, at the end of May, the number on the counter will be recorded again & the difference will be the number of copies on that printer for the month. The company wants the estimate to be within +/- 100 pages of the true mean with a 95 percent confidence level.

[A] Assume that the conjecture concerning the size of the standard deviation is off (plus or minus) by as much as 10 percent. What percentage change in the required sample size would this produce?

[B] The standard deviation in pages printed is thought to be about 1,400 pages. How many printers should be sampled?

Reference no: EM1321679

Questions Cloud

Ftc regulations on diet product claims : What do you think a court will decide here? If the company wants to comply with the FTC regulations on diet product claims, what language would need to change in the ads mentioned above?

Multiplexer and decoder : A bus organized the CPU has 32 registers with 16 bits in each, an ALU and a destination decoder. Specify how many multiplexers are there within the bus, and specify the size of each multiplexer?

Management predicts that if the strike is successful : Management predicts that if the strike is successful the cost of worker will increase to $100 per day.

Mentioning hypotheses and decision rule : At 5% level of significance, is true mean smaller than specification? Clearly mention your hypotheses and decision rule.

Find percentage change in the required sample size : What percentage change in the required sample size would this produce?

Number of prizes in a randomly chosen multi-pack : If the packets are sold in multi-packs containing six packets, what is the distribution of the number of prizes in a randomly chosen multi-pack?

Statistical conclusion : The investor hires a researcher who randomly samples 19 warehouses that are for sale and finds that the mean price per square metre is $316,70, with a standard deviation of $12.90. If the researcher uses a 5% level of significance, what statistica..

Selecting suitable hypothesis : National average for 2-year leases is 30,000 miles. Select the suitable hypothesis.

Context of contract law for dealership : What do you think about this situation? Should parties to a sales contract be able to rescind a contract because of mutual mistake of fact? Why or why not? Did either party act unethically in this case?

User Account

All Pages