A normally distributed quality characteristic is monitored

Assignment Help Basic Statistics

Reference no: EM13623806

A Normally distributed quality characteristic is monitored throughuse of an x bar and R chart. These charts have the followingparameters n=4

X barchart R chart

UCL=626 UCL=18.795

Center line=620 Center line =8.236

LCL=614 LCL=0

Both charts exhibit control.

a) What is the estimated standard deviation of the process?

b) Suppose an s chart were to be substituted for the R chart. Whatwould be the appropriate parameters of the s chart?

c) If specifications on theproduct were 610 +/- 15, what would be your estimate of the processfraction nonconforming?

d) What could be done to reduce this fraction nonconforming?

e) What is the probability of detecting a shift in the process mean to610 on the first sample following the shift (sigma remainsconstant)?

f) What is the probability ofdetecting a shift in part (e) by at least the third sample afterthe shift occurs?

Reference no: EM13623806

Questions Cloud

A using exponential distribution estimate the average time : a using exponential distribution estimate the average time using the sample mean.times1118022136011b using the previous

A 10-m-by-14-m house is built on a 12-cm-thick slab of : this question requires a numeric or algebraic answer. in order to receive full credit for this problem you must show

Which of the two projects should be chosen under the : acme inc. is considering the following two investments both of which cost 50000 today. the firms cost of capital is 8.

Water undergoes viscous flow through two pipes with the : water undergoes viscous flow through two pipes with the same pressure difference between the ends. pipe 1 has three

A normally distributed quality characteristic is monitored : a normally distributed quality characteristic is monitored throughuse of an x bar and r chart. these charts have the

Suppose that 4 candidates run for the governor of a state : suppose that 4 candidates run for the governor of a state. how many ways are there in which the numbers of their

Give the coefficient of xk in the expansion of x 1x99 : give the coefficient of xk in the expansion of x 1x99 where k is an integer between 0 and 99 inclusive. give

Suppose that the probability that an incoming email is a : suppose that the probability that an incoming email is a spam is ps that the probability that the word w occurs in the

Progrmaing i uploaded the : i uploaded the instruction. ltbrgt

User Account

All Pages