Thursday
July 24, 2014

Homework Help: hypothesis testing by mean levels

Posted by lubna on Wednesday, November 10, 2010 at 4:22am.

hi everyone... i have this homework.. i tried to solve it... can anyone check if it's right or not, please??

Question:

The maximum acceptable level of a certain toxic chemical in vegetables has been set at 0.2 parts per million (ppm). A consumer health group measured the level of the chemical in a random sample of tomatoes obtained from one producer to determine whether the mean level of the chemical in these tomatoes exceeds the recommended limit.

Answers:

A. H0: < 0.2 ppm
Ha: > 0.2 ppm

B. H0: > 0.2 ppm
Ha: = 0.2 ppm

C. H0: = 0.2 ppm
Ha: > 0.2 ppm

D. H0: = 0.2 ppm
Ha: 0.2 ppm

--==--

I assumed that Ho is true
so mainly Ho: = 0.2 ppm
and since the consumer health group are trying to determine the mean level of the chemicals in tomatoes if they exceeds the max limit, So, i'll assume also Ha: > 0.2 ppm

and therefore the correct answer would be C

is that correct?? please reply to me ASAP.. Thank you

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Statistics - The distribution of cholesterol levels of the residents of a state...
Math - Can someone work this for an example I have tried this one and several ...
hypothesis testing and CI - A hypothesis test for a population mean is to be ...
MTH233/statistics UOP - . Hypothesis Testing o Please complete the following 5-...
statistics - A management consultant has analysed a random sample of 40 large ...
statistica - A management consultant has analysed a random sample of 40 large ...
STAT - Given a sample size of 18, with sample mean 660.3 and sample standard ...
STAT - Given a sample size of 18, with sample mean 660.3 and sample standard ...
sentences - Please note that we don't do students' homework for them. Once YOU ...
Statistics - Which testing a statistical hypothesis with significance level of ...

Search
Members