A firm wants to know with a 98% level of confidence if it can claim that the boxes of detergent it sells contain more than 500g of detergent. From past experience the firm knows that the amount of detergent in the boxes is normally distributed. The firm takes a random sample of n =25 and finds that X = 520 g and s = 75g. What's your final conclusion?
(Ho: u = 500; Ha: u > 500)
Perform a hypothesis testing of the mean
Yes, accept null hypothesis
(Ho: u = 500; Ha: u > 500)
Perform a hypothesis testing of the mean
Yes, accept null hypothesis