Testing for population mean

Reference no: EM1322471

Testing for population mean.

A quality control expert is called in to determine whether a newly installed machine is producing a particular cotton cloth according to the specifications set by the manufacturer. The mean warp-breaking strength of this particular cotton cloth has been established to be 66 pounds. A random sample of 36 pieces of cotton cloth is obtained from a production run on this machine. The results of the sample reveal a mean warp-breaking strength of 64.5 pounds and a standard deviation of 5 pounds. Can the quality control expert say that the cotton produced on the new machine meets the warp-breaking specification of the manufacturer at the .05 level of significance?

Reference no: EM1322471

Questions Cloud

How many atoms are there in the sun : What is the difference between voltage current characteristics for intrinsic and extrinsic semiconductor in both forward in addition to reverse direction.

Probability of selecting student from college : Finding the probability of each event in a group of events of different possibility

Businesses-stakeholders-ethics and public policy : The focus of this course has been on how businesses, stakeholders, ethics, and public policy all relate to one another. Imagine that you are a senior government official with the power to unilaterally implement

A helicopter is ascending vertically with a speed of 5.45 : A high-frequency photon is scattered off of an electron and experiences a change of wavelength of 8.0×10-4 .At what angle should a detector be placed to detect scattered photon (relative to the direction of the incoming photon).

Testing for population mean : Testing for population mean - warp-breaking specification of the manufacturer at the .05 level of significance?

Testing for population proportion : Testing for population proportion - evidence that the proportion of data processing clerks who have gone through the new training and are no longer employed is less than .25?

Tree diagram to show all possible outcomes : Draw a tree diagram to show all possible outcomes of the experiment. Label the probability associated with each stage of the experiment on the appropriate branch.

What is the wavelength, in mm, of the sound during water : A Carnot engine operating with an ideal gas takes heat energy from the hot reservoir at 500 degrees C and exhausts heat energy to the cold reservoir at 250 degrees C. If the engine does 400J of work per cycle, what is its efficiency.

Frustration with bureaucratic red tape : You are an investor in small businesses, and you have three business plans on your desk. Choose one of the potential business owners listed. Explain why you think that would be the best bet for an investment.

User Account

All Pages