Question

A cigarette manufacturing rm claims its brand a of the cigarettes outsells its brand b by 8%.If its found that 42 out sample of 200 smoker prefer brand a and 18 out of another random sample of 100 smokers prefers brand b, test whether the 8% dierence is a valid cliam

Answer 1

Answer with explanation:

Claim of cigarette manufacturing company brand a of cigarettes outsells its brand b by 8%.

number of persons who prefer brand A

$=\frac{42}{100}$

Number of persons who prefer Brand B

$=\frac{18}{100}=\frac{36}{200}$

Difference,between people who like Brand A more than Brand b, is

    $=\frac{42}{100}-\frac{36}{200}=\frac{6}{200}$

% Difference between two brands ,that is Brand A and brand B

   $=\frac{6}{200}\times 100=3$

is equal to 3%.

So, the given statement , that there is 8% difference between two brands , is Invalid claim.

Answer 2

Answer

It is a valid claim

Step-by-step explanation: