, 16.05.2020kirbydimaranan

# . A manufacturer produces piston rings for an automobile engine. It is known that the ring diameter is normally distributed with σ=0.001 millimeters. A random sample of 15 rings has a mean diameter of 74.036 millimeters. (a) Construct a 95 % two–sided confidence interval on the population mean diameter of piston rings. (b) Construct a 99 % two–sided confidence interval on the population mean diameter of piston rings. (c) Compare the width of the 99% interval with that of the 95% interval. (d) Suppose it is desired to estimate the ring diameter with an error that is no more than 0.0005 at 95% level. What sample size is required ?

The answer along with the explanation is provided in the attached document.

Explanation:

The explanation is given in attached document file.

With standard ring sizes, every half-size matches up to a 0.4 millimeter increment, starting with size 3 equaling 14 mm, size 3.5 equal to 14.4 mm, size 4 equal to 14.8 mm, and so on. Common ring sizes for women are 6 (16.5 mm), 6.5 (16.9 mm), and 7 (17.3 mm).

Explanation:

Sana nakatulong

Explanation:

tara laro tayo dack dakan kita

### Other questions on the subject: Math

Math, 28.10.2019, kateclaire
BStep-by-step explanation:becuase when we say given the equation that identify the value of x...Read More
Math, 28.10.2019, kambalpandesal23
Just get the decimal point but im not sure...Read More
Math, 28.10.2019, girly61
1)  The numbers are 12 and 15.2)  There are 5 red marbles.3)  The youngest is 12 years old, Sam's age.4) 1,735.005)  130.00Please click the image below to view my complete solution...Read More
Math, 28.10.2019, nelgelinagudo