## Rob Dowler

was active active 1 year, 11 months ago## Activity

Rob Dowler replied to the topic What Type of Calculator Should I Use for the ASQ SSBB? in the forum Training 1 year, 11 months ago

Look at the Casio fx-300ES Plus. It’s permitted for use on the PSAT/NMSQT, SAT and ACT college entrance exams, AP tests, and NCEES exams. I called ASQ and this is the one they recommend. It’s got all the nifty functions like X squared and factorials like scientific calculators without the memory functions that would kill it for use on the exam.

Rob Dowler replied to the topic Fewest Samples? in the forum Training 1 year, 12 months ago

I’m thinking at least one point must be true right? Point three encompases they are using the wrong formula altogether. What do you think?

Rob Dowler replied to the topic Fewest Samples? in the forum Training 1 year, 12 months ago

Thanks for your time.

They actually say in the answer feedback that the formula I used is the correct one. So:

1: I miss-applied a term to the formula.

2: I mis-calculated the formula using the right terms.

3: They made a mistake in the sample exam.The sample question is from a very well respected organization but everybody makes mistakes.

Rob Dowler started the topic Fewest Samples? in the forum General 2 years ago

Hi,

I am having trouble question found on a sample exam.

Need to know fewest samples for 99% confidence when sheep are fed a a new diet, the avg weight gain is 5 lbs over current avg of 20 lbs. weight gain per sheep is normally dist. with a SD of 4.3 lbs. I know the formula is n=(Zsq x st dev sq)/(E)sq

Therefore I came up with Z=2.58…[Read more]

Rob Dowler started the topic Problem with sample exam question in the forum General 2 years ago

Hi,

I am having trouble question found on a sample exam.

Need to know fewest samples for 99% confidence when sheep are fed a a new diet, the avg weight gain is 5 lbs over current avg of 20 lbs. weight gain per sheep is normally dist. with a SD of 4.3 lbs. I know the formula is n=(Zsq x st dev sq)/(E)sq

Therefore I came up with Z=2.58 SD=4.3 E=5…[Read more]

Rob Dowler replied to the topic Green Belt Exam Questions in the forum Training 2 years ago

Hi,

I am having trouble question found on a sample exam too.

Need to know fewest samples for 99% confidence that when sheep are fed a a new diet, the avg weight gain is 5 lbs over current avg of 20 lbs. weight gain per sheep is normally dist. with a SD of 4.3 lbs. I know the formula is n=(Zsq x st dev sq)/(E)sq

Therefore I came up with…[Read more]

Rob Dowler became a registered member 2 years ago