Find mean nicotine content of brand of cigarettes is greater

Reference no: EM13148853

Nicotine in cigarettes. To determine whether the mean nicotine content of a brand of cigarettes is greater than the advertised value of 1.4 milligrams, a health advocacy group tests.

H0: ¹ = 1:4
Ha: ¹ > 1:4

The calculated value of the test statistic is z = 2:42.

(a) Is the result significant at the 5% level? Yes
(b) Is the result significant at the 1% level? No
(c) By comparing z with the critical values in th e bottom row of Table C, give two numbers that catch the P-value between them.

Reference no: EM13148853

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