Test claims that quarters the weights

Reference no: EM1393413

Quarters are currently minted with weights normally distributed and having a standard deviation of .061. New equipment is being tested in an attempt to impove quality by reducing variation. A simple random sample of 22 quarters is obtained from those manufactured with the new equipment, and this sample has a standard deviation of .041. Use a .05 significance level to test claims that quarters manufactured with the new equipment have weights with a standard deviation less than .061

Reference no: EM1393413

Questions Cloud

Confidence interval of the mean of a given sample : Which of the following is true about a 95% confidence interval of the mean of a given sample:

Effectiveness of drug preventing growth of cancerous cells : Suppose you have been assigned to test the effectiveness of drug X in preventing the growth of certain types of cancerous cells. your responsibilities include designing and executing the experimental approach.

Determining the sampling distribution : If you wish to estimate a population mean with a sampling distribution error SE = 0.28 using a 95% confidence interval and you know from prior sampling that sigma^2 is approximately equal to 5.4, how many observations would have to be included in ..

Explain regional economic integration : The European Union is an example of a regional economic integration.

Test claims that quarters the weights : Use a .05 significance level to test claims that quarters manufactured with the new equipment have weights with a standard deviation less than .061

Approximate confidence interval : Assume you want to estimate the population proportion,p, and the estimator for the mean proportion (p-hat)= 0.34, N = 6000, and n = 1300. Find an approximate 95% confidence interval for p.

Data capture activity : know how the scanned record will be managed and the standards or legislation that are required to be followed - Discussion of the exsisting system

Global standardization strategy : Global standardization strategy, If the pressure of cost reduction is high but the pressure of local responsiveness is low then which of the strategic choice a firm should make to "go international":

Methods and random variables : Mention the experimental outcomes. Illustrate out a random variable threat that represents the number of heads occurring on the two tosses.

User Account

All Pages