B. Determine the given, formulate the null and aftemative hypothesis in words and in symbols, and
the appropriate test statistic.
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.
Null Hypothesis:
In symbol:
Alternative Hypothesis:
In symbol;
Appropriate test statistics​