An Advertising Executive Wanted to Know Whether a New Ad

Multiple Choice

An advertising executive wanted to know whether a new ad campaign designed to deter children from smoking was working.After seeing the ads,a randomly selected sample of 36 teenagers rated what they thought of smoking on a -5 (it's terrible) to +5 (it's fantastic) .The mean rating for the sample was 0.70.The population mean is 0,with a population standard deviation of 2.00.What is the probability of obtaining a sample mean of 0.70 or lower (more negative) ?

A) 0.0179
B) 0.1368
C) 0.3632
D) 0.4821