The amounts of nicotine in a certain brand of cigarette are normally distributed with a mean of 0.966 grams and a standard deviation of 0.315 grams. Find the probability of randomly selecting a cigarette with 0.305 grams of nicotine or less.

The  probability is  

Step-by-step explanation:

From the question we are told that

      The population mean is  

       The standard deviation is  

Given that the amounts of nicotine in a certain brand of cigarette are normally distributed

    Then the probability of randomly selecting a cigarette with 0.305 grams of nicotine or less is mathematically represented as

Generally

So  

From the z-table(reference calculator dot  net  ) value of  

So  

=>  

=>

think the answer would beb

answer is b

step-by-step explanation: