NOTE: answer only items 3-5 Express the null hypothesis Ho and alternative hypothesis Ha in notation In the followingsituations:A medical trial was conducted whether or not a new medicine reduces cholesterol by30%.Hạ: m= 30 %H: m 30 %2. On a driver's test, about 35% passed the test in the first try. A researcher wants todetermine if more than 35% passed in the first try.Ho: a : 35%H: a< 35 %3. A manager claims that the mean age of the employers is 28 years. The mean age of therandomly selected 50 employees is 26 years, which is not equal to what is clairned by the1.manager.4. A recording company claims the mean time to write a song is 7 days. Fifty-five randomlyselected songwriters said that it is less than 7 days. Each of the said it takes 5 days to writea song.Ho:5. A mathematics teacher claims that the mean grade of Statistics students is 88. The meangrade of the 35 randomly selected Statistics students is 90 which is more than what themathematics teacher claims.Ho:H

Know that Null hypothesis is denoted by H0 And alternative hypothesis is denoted by Ha

Ho: 4. A recording company claims the mean time to write a song is 7 days. Fifty-five randomly selected songwriters said that it is less than 7 days. Each of the said it takes 5 days to write a song. Ho H: 5. A mathematics teacher claims that the mean grade of Statistics students is 88. The mean grade of the 35 randomly selected Statistics students is 90 which is more than what the mathematics teacher claims. Ho: H: