statistics probability

Written Work 1 Directions: State the null and alternative hypotheses of the following statements, both in words and in notations. Indicate also if the hypothesis is one-tailed or two- tailed. If it is one-tailed, identify the direction whether it is left or right. Use another sheet of paper. Ho H. talled Statements test In In in In notations words notations words 1. The average number of students in a class is Ha: more than 40. Ho: Ho 2. The average price of a certain gadget is less than Php 20,000. Ho 3. Ms. Santos claims that on the average there are 25 working students in the classes she is Ho: Ho: Ha: handling. The school head wants to verify whether the claim is acceptable or not. 4. Survey says that a typical student spends at Hai least 4 hours daily in studying and answering Ho: Ho worksheets. 5. In the previous month, the average family income in a certain purok was Php 9,000. The Ho: Ha: Hai following month, 25 households had a mean of P8,000 and with standard deviation of Php120