A random sample of 40 bags of a certain brand of chips contains an average of 32 grams of fat with s.d. 2.8 grams. We wish to determine whether there is strong evidence that the overall average amount of fat contained in this brand of chips is over 30 grams. (a)Clearly state the test hypotheses as follows: Let____represent the overall______H0:____,H1:_____ (b)Use an appropriate formula to calculate the test statistic. (c)Use an appropriate table to estimate the p-value. (Do not draw any conclusion
A random sample of 40 bags of a certain brand of chips contains an average of 32 grams
of fat with s.d. 2.8 grams. We wish to determine whether there is strong evidence that the
overall average amount of fat contained in this brand of chips is over 30 grams.
(a)Clearly state the test hypotheses as follows:
Let____represent the overall______H0:____,H1:_____
(b)Use an appropriate formula to calculate the test statistic.
(c)Use an appropriate table to estimate the p-value. (Do not draw any conclusion)
The question is about hypo. testing
Given :
Randomly selected no. of bags ( n ) = 40
Sample mean amount of fat contained ( ) = 32 grams
Sample std. deviation amount of fat contained ( s ) = 2.8 grams
Popl. mean amount of fat contained ( ) = 30
To find :
To test that is there strong evid. that the overall avg. amount of fat contained in this brand of chips is over 30 grams
1 ) Null and alt. hypo
2 ) Test stat
3 ) p value using table
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