A random sample of 400 electronic components manufactured by a certain process are tested, and 30 are found to be defective.
a. Let p represent the proportion of components manufactured by this process that are defective. Find a 95% confidence interval for p.
b. How many components must be sampled so that the 95% confidence interval will specify the proportion defective to within ±0.02?
c. (Hard) The company ships the components in lots of 200. Lots containing more than 20 defective components may be returned. Find a 95% confidence interval for the proportion of lots that will be returned.
You might also like to view...
A sign that has a listing of your most common services with the price would be known as ______
A) Package pricing B) Menu board C) Competitive pricing D) All of the above
Drawing with CAD software is a lot slower than drawing by hand.
Answer the following statement true (T) or false (F)
Which of these clutches puts an Allison WT drop-box into extra-low range?
A. C4 B. C5 C. C6 D. C7
If the two inputs to a NOR gate are 0 and 0, the output is
A. uncertain B. 0 C. 1