Math Answers

The manager of the machine-made kretek kretek cigarette company RAENAK found that 12% of its production was below production standards (poor). One day, the manager received a report that on that day 17% of substandard cigarette products were obtained from a random sample of 1000 cigarettes. Test whether the manufacturing defects (17%) are random or permanent (machines need to be repaired)! Use a= 0.05!

Manajer perusahaan rokok RAENAK sigaret kretek mesin mendapati bahwa 12% dari produksinya berada di bawah standar produksi (buruk). Pada suatu hari, manajer tersebut mendapatkan laporan bahwa pada hari tersebut didapatkan produk rokok di bawah standar sebesar 17% dari sampel acak sebesar 1000 batang rokok. Ujilah apakah cacat produksi (sebesar 17%) tersebut bersifat random atau permanen (mesin harus diperbaiki)! Gunakan a= 0,05! The manager of the machine-made kretek kretek cigarette company RAENAK found that 12% of its production was below production standards (poor). One day, the manager received a report that on that day 17% of substandard cigarette products were obtained from a random sample of 1000 cigarettes. Test whether the manufacturing defects (17%) are random or permanent (machines must be repaired)! Use a=0.05!

A company manufactures a new type of mosquito repellents with the period of effectiveness that is approximately normally distributed with a standard deviation of 30 hours. A sample of 40 repellents was taken and the average period of effectiveness is 290 hours. Calculate a 96% confidence interval for the true mean of the period of effectiveness

Find a general solution for the differential equation -y''=6x+xe^x (a) using the method of undetermined coefficients. (b) using variation of parameters

dy/dx + 4y= 8

1. There are 49 dogs signed up for a dog show. There are 36 more small dogs than large dogs. How many small dogs have signed up to compete? 

This question comes directly from a second grader's math homework.

determine the approximate age of a piece of burned wood, if it was found that 85.5% of the C-14 found in living trees of the same type had decayed.

It is claimed that the average weight of a bag of biscuits is 250 grams with a standard deviation of 20.5 grams. Would you agree to this claim if a random sample of 30 bags of biscuits showed an average weight of 240 grams, What is the tabular value if the level of significance is 5%?

Evaluate the integral "\\int_0^2 e^{x^3}x^2dx".

find the total length of the curve r=4(1-sin theta) form theta = 90 degree to theta= 270 degree