Question

ผู้เยี่ยมชม

2ข้อนี้คิดยังไงหรอคะ รบกวนช่วยอธิบายหรืิอขอวิธีทำอย่างละเอียดหน่อยค่ะ
1. For a grated school, an executive committee wants to know if there is any difference in student age between male and female at 0.05 significant level. Thus, he randomly samples and askes 15 males and 17 females for their ages as following

(t0.025, 30 = 2.042; t0.025, 25.03 = 2.061; t0.05, 30 = 1.697; t0.05, 25.03 = 1.709)

Male: 22 22 20 18 21 23 24 23 22 19 23 22 19 20 21    

Female: 18 25 26 19 20 20 18 26 23 25 19 18 18 19 23 24 26

2. In a study of 200 male and 250 female internet users, 32% of males and 35% of females said they plan to shop online at least once a month. At 0.10 significant level, is there a difference in proportion of internet user between male and female internet user who plan to shop on line?