Wednesday

July 30, 2014

July 30, 2014

Posted by **Student** on Monday, September 15, 2008 at 1:36am.

Smith Widget Company makes widgets for the medical industry. One particular customer requires widgets that meet FDA standards. One FDA standard requires Z-testing of at least 100 widgets at a time at the .08 level of significance. The specific standard requires that widgets be no smaller than a certain tolerance and no larger than a certain tolerance. The critical value(s) for such a test would be:

- Probability/Statistics -
**MathGuru**, Monday, September 15, 2008 at 9:47pmIf you are doing a z-test, you look at a z-table for your cutoff or critical value(s). How do you translate .08 to a cutoff value from the table? It depends on whether the test is one-tailed or two-tailed. For a two-tailed test (cutoff points at both tails), you split the .08 into .04 and .04 for both tails. (For a one-tailed test, you don't split the value.) Some z-tables will make it easier for you by showing values in the tails. Then you would look for your cutoffs according to the level given, remembering to split for two-tailed tests. It may also help to have an index card with some commonly used cutoff values, so you don't have to look at the table each time.

**Related Questions**

statistics - The probability any one widget is free of defects is 0.93. For ...

Intro to Probability - Widgets are produced at a certain factory by each of ...

Math - The revenue R from selling x number of phone widgets is given by , and ...

algebra - the acme widget company has $13,000 available for making widgets. part...

econmics - Suppose the price of widgets rises from $7 to $9 and consumption of ...

economics - Suppose the price of widgets falls from $7 to $5 and consumption of ...

calc - Please help me you guys, this is the 3rd time I have posted this question...

Calculus (Help) - Can you please help me with this problem? I asked earlier, but...

Calculus - A company manufactures widgets. The daily marginal cost to produce x ...

statistics - A widget factory's worker productivity is normally distributed. one...