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1. A seller claimed that her lip tint has a mean organic content of 90%. A rival seller asked 60 users of that lip tint and found that it has a mean organic content of 85% with a standard deviation of 5%. Test the claim at 1% level of significance and assume that the population is approximately normally distributed. Step 1: Formulate the null and alternative hypotheses. Step 2: Specify the level of significance to be used. Step 3: Select and compute the appropriate test statistic. Step 4: Determine the critical region/s. Step 5. Make a statistical Decision. Step 6: Draw the appropriate conclusion