7. An economist wants to lind out : there is a difference in the monthly expenses of families from Makati and Quezon City. 10. A faculty development committee chair wants to find out if the in-service training iney organized contributed in the improvement of teacher" performance. I 1. A marketing manager wonted to determine if there b o doniticont difference In The weekly soles of three sales representatives. C. Write TRUE : the statement is true. I fohe, underline the word/'s or phrase which makes it false and write the comect word/'s or phrose to make it true, 12. If the rejection region lies entirely on the left foll of the curve. then the test it o two-toled feit. 13. A type l error is committed when we fail to reject the null hypothesis when it is true. 14, If the computed value folk outside the rejection region. then the null hypothesi & rejected 15. If the symbol > appears in the oBernative hypothesi. then we use a one-toled toit. 16. In a two foiled fest, the rejection region & divided into two and placed in both talk of the curve