Determine sample size to use for survey

Assignment Help Basic Statistics

Reference no: EM13112252

You are asked by owner of Starshine Motel to create the customer satisfaction survey to find out the percentage of customers who are dissatisfied with service. In past year, 20,000 customers were serviced. She wants 95% level of confidence with the allowable statistical error of +/- 0.02. From past estimates, manager thinks that about 4% of customers have expressed dissatisfaction. What sample size must you use for this survey?

Reference no: EM13112252

Questions Cloud

Determine the primary concept of hazard recognition : A mechanic in an automotive repair shop is exposed to the following carbon monoxide levels over an 8 hour shift.

How can this be reconciled with the fact that enzymes : Imagine this situation: Species #1 and Species #2 are unrelated, but each produces an enzyme capable of hydrolyzing soybean oil. How can this be reconciled with the fact that enzymes are highly specific to their substrates?

Determining de broglie wavelength : We use Use the De Broglie wavelength formula, ohr radius definition and wave-particle duality equation to compute the wavelength of,

Symmetric distribution-simple random paired sample : In performing a hypothesis test based on a simple random paired sample to compare the means of two populations, knowing that the paired difference variable has a symmetric distribution that is far from normal

Determine sample size to use for survey : From past estimates, manager thinks that about 4% of customers have expressed dissatisfaction. What sample size must you use for this survey?

Is the inability of this medium to distinguish : Many organisms possessing many different lipases produce positive results on Tributyrin Agar. Is the inability of this medium to distinguish between these different enzymes a weakness in its specificity or its sensitivity?

Test of hypothesis for difference between means : A study was conducted of the annual incomes of beginning probation officers in metropolitan areas of less than 100,000 population and in metropolitan areas having more than 500,000 population.

How ppf presents a strong rationale for the plausibility : Illustrate with a graph how the PPF presents a strong rationale for the plausibility of the law of supply and supply and demand graphs indicating the change in equilibrium price and quantity.

Value of linear correlation coefficient : A supplier of 3.5" disks clams that only 1% of the disks are defective. In a random sample of 600 disks, it is found that 3% are defective, but the supplier claims that this is simply a sample fluctuation. At the 0.01 level of significance, test t..

User Account

All Pages