1. Adam is measuring the heights in cm of his tomato plants. Frequency
Height (cm)
140 << 150
7
150 160
10
(a) Estimate the mean height.
Give your answer correct to I decimal place.
(3 marks)
(b) Explain why your answer to part (a) is an estimate
(4 marks)
160h 170
15
170 19
180 200
9

Astudy was interested in determining if eating milk chocolate lowered someone's cholesterol levels.ten people's cholesterol was measured. then, each of these individuals were told to eat 100g of milk chocolate every day and to eat as they normally did. after two weeks, their cholesterol levels were measured again. is there evidence to support that their cholesterol levels went down? how should we write the alternative hypothesis? (mud = the population mean difference= before - after)a. ha: mud = 0b. ha: mud > 0c. ha: mud < 0d. ha: mud does not equal 0