Question text A 3-sigma control chart is established and the following rule is used to detect out-of-control situations of a normally distributed process. Rule: 2 out of 3 consecutive points are outside of 1.75 sigma but still within the control limits. Compute type 1 error of the rule.

Select one:

a. 0.0017

b. 0.0776

c. 0.0078

d. 0.0167

e. 0.0145