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1. Null hypothesis: the mean entry-level salary of an employee and is not significantly less than that of professionals in the company.

   Alternative hypothesis: the mean entry-level salary of an employee is significantly less than that of professionals in the company.

   What is a hypothesis in a study?

   A hypothesis in a study is a statement that is made to explain a given observation without prior testing to prove or disprove the statement.

   The two types of hypothesis are:

   • null hypothesis
   • alternative hypothesis

   The null hypothesis states that there is no significant difference between two variables while the alternative hypothesis states that there is a significant difference between the variables.

   For the given observation:

   Null hypothesis: the mean entry-level salary of an employee and is not significantly less than that of professionals in the company.

   Alternative hypothesis: the mean entry-level salary of an employee is significantly less than that of professionals in the company.

   In conclusion, the null hypothesis is the hypothesis of no significant difference.

   Learn more about null and alternative hypothesis at: https://brainly.com/question/13045159

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