A random sample of 15 statistics textbooks has a mean price of $105 with a standard

deviation of $30.25. Determine whether a normal distribution or a t-distribution should

be used or whether neither of these can be used to construct a confidence interval.

Assume the distribution of prices is skewed left.

deviation of $30.25. Determine whether a normal distribution or a t-distribution should

be used or whether neither of these can be used to construct a confidence interval.

Assume the distribution of prices is skewed left.