An investigation was conducted looking into how much of a particular brand of toothpaste will remain in the container, when a person cannot get anymore to come out by squeezing it. suppose five 6.0 oz tubes of this brand of toothpaste were randomly selected and squeezed until no more toothpaste will come out. then each tube is cut open and the amount remaining is weighed (in oz), resulting in the following data: .53, .63, .46, .50, .37. does it appear that the true average amount left is less than 10% of the advertised net contents?