Mathematics, 13.12.2019 04:31 needhelpwithHW10

Amanufacturer produces piston rings for an automobile engine. it is known that ring diameter is normally distributed with σ=0.001 millimeters. a random sample of 15 rings has a mean diameter of x¯=74.021. construct a 99% two-sided confidence interval on the true mean piston diameter and a 95% lower confidence bound on the true mean piston diameter. round your answers to 3 decimal places.

Answers: 3

Show answers

Another question on Mathematics

Mathematics, 21.06.2019 18:40

Solve the equation below: (x+4)/6x=1/x a. x=2 b. x=0,2 c. x=-2 d. x=0,-2

Answers: 1

Answer

Mathematics, 21.06.2019 19:30

Now max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.

Answers: 1

Answer

Mathematics, 21.06.2019 20:30

Answer asap ill give ! ’ a sample of radioactive material decays over time. the number of grams, y , of the material remaining x days after the sample is discovered is given by the equation y = 10(0.5)^x. what does the number 10 represents in the equation? a. the half-life of the radioactive material, in days b. the amount of the sample, in grams, that decays each day c. the time, in days, it will take for the samples to decay completely d. the size of the sample, in grams, at the time the material was discovered

Answers: 1

Answer

Mathematics, 21.06.2019 22:00

Rewrite 9 log, x2 in a form that does not use exponents. 9log, x = log, x

Answers: 3

Answer

You know the right answer?

Amanufacturer produces piston rings for an automobile engine. it is known that ring diameter is norm...

Questions