Question

Question 1 [1 mark] A group of researchers was concerned with the growing prevalence of peanut allergies in Western countries and decided to investigate the effectiveness of two alternative approaches to treatment. They recruited 98 infants with a diagnosed peanut allergy and randomly assigned them either to consume small amounts of peanuts regularly or to completely avoid peanuts until 60 months of age. At the end of that time they recorded which infants were still allergic to peanuts. The following plot and summary table were obtained from this data. Rows: Allergy Columns: Treatment Avoid Low Dose All Chart of Treatment Responses Yes 18 23 5 10.64 23.47 35.29 30 No 33 64.71 42 75 89.36 76.53 Data 20 51 10 All 47 98 100.00 100.00 100.00 Cell Contents Count 96 of Column 0 Allergy Yes No Yes No Low Dose Avoid The researchers are interested in whether there is any statistical evidence that the proportions of infants with a peanut allergy in the general population who would still have allergies after treatment are different for the two treatment groups. They decide to carry out a relevant statistical test to determine this. Which of the following statements best represents the null hypothesis (Ho) for this test?

Answer 1

option F ) is correct

Ho: P1= P2 Ha: P1 + P2

we wanted to see if there is a difference, hence it non-directional or two-tailed test

hypothesis is about parameter (population and not sample)

hence e) part is incorrect