Regular exercise can help keep a healthy weight, improve mental health, and reduce the stress caused by the busy daily life. However, recent studies found that many people have to stay at home and stop outdoor exercises to prevent the risk of being infected with Covid- 19. 24FITNESS, a home gym equipment company that specializes in the production of stationary bicycle, conducted a fitness survey in March and asked respondents for their preferences towards a stationary bicycle. Respondents were also asked with the following questions.

Please answer the following questions. In each case, formulate the null and the alternative hypotheses and conduct the appropriate statistical test(s). Use = 0.05.

(a) Which level of age group has the highest response in the survey? What is the percentage of this group if missing data are excluded from the calculations? Please explain.

(b) Determine the number of female respondents who do exercise regularly?

(c) Is there a significant relationship between gender and respondents who regularly do exercises? Please write down the null and alternative hypotheses, and conduct appropriate statistical test.

(d) Do the males and females differ in their enjoyment towards stationary bicycle. Please write down the null and alternative hypotheses, conduct appropriate statistical tests, and explain the results.

Variable Questions Value BICYCLE Do you enjoy riding stationary bicycle? 1 = not at all enjoyable, to 7 = very enjoyable EXERCISE Do you do exercise regularly? 1 = Yes; 0 = No GENDER What is your gender? 1 = Male; 2 = Female AGE Age category 1 = Less than 18, 2 = 18 to 24, 3 = 25 to 34, 4= 35 to 44, 5=45 to 54, 6 = 55 to 64, 7 = 65 to 74, 8 = 75 and older, 9 = Missing = RESPONDENT AGE 3 WN - BICYCLE 7 7 1 6 GENDER 1 2 1 Na 2 4 1 4 1 1 2 1 2 1 1 6 5 5 3 3 1 EXERCISE 1 1 0 1 0 0 0 0 1 0 1 1 1 0 1 0 1 0 0 0 4 3 1 1 2 1 2 1 2 1 2 1 2 1 2 1 2 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 3 Nono w Non-Nonwo 1 3 2 4 2 1 1 0 0 3 0 3 2 1 2 1 3 1 1 25 3 Variable Questions Value BICYCLE Do you enjoy riding stationary bicycle? 1 = not at all enjoyable, to 7 = very enjoyable EXERCISE Do you do exercise regularly? 1 = Yes; 0 = No GENDER What is your gender? 1 = Male; 2 = Female AGE Age category 1 = Less than 18, 2 = 18 to 24, 3 = 25 to 34, 4= 35 to 44, 5=45 to 54, 6 = 55 to 64, 7 = 65 to 74, 8 = 75 and older, 9 = Missing = RESPONDENT AGE 3 WN - BICYCLE 7 7 1 6 GENDER 1 2 1 Na 2 4 1 4 1 1 2 1 2 1 1 6 5 5 3 3 1 EXERCISE 1 1 0 1 0 0 0 0 1 0 1 1 1 0 1 0 1 0 0 0 4 3 1 1 2 1 2 1 2 1 2 1 2 1 2 1 2 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 3 Nono w Non-Nonwo 1 3 2 4 2 1 1 0 0 3 0 3 2 1 2 1 3 1 1 25 3