a software company creates two versions of a new feature and releases one or the other version to each of…

a software company creates two versions of a new feature and releases one or the other version to each of their beta testers. a week later, they ask the beta testers to rate the feature on a scale of 1 to 7. the ratings are left - skewed. they plan to conduct a two - sample t test to see whether there is a significant difference between the mean ratings based on which version the tester received. which of the following are conditions for this type of test? choose all answers that apply: a the company randomly assigns a version to each tester. b they assign each version to an equal number of testers. c they assign each version to at least 30 beta testers.

a software company creates two versions of a new feature and releases one or the other version to each of their beta testers. a week later, they ask the beta testers to rate the feature on a scale of 1 to 7. the ratings are left - skewed. they plan to conduct a two - sample t test to see whether there is a significant difference between the mean ratings based on which version the tester received. which of the following are conditions for this type of test? choose all answers that apply: a the company randomly assigns a version to each tester. b they assign each version to an equal number of testers. c they assign each version to at least 30 beta testers.

Answer

Brief Explanations:

For a two - sample t - test, random assignment of treatments (in this case, versions of the feature) to subjects (beta - testers) is a key condition. This helps to create comparable groups. The number of subjects in each group does not have to be equal for a two - sample t - test. Also, while having at least 30 observations in each group is a rule - of - thumb for the Central Limit Theorem to apply (which is relevant for some t - test assumptions), it is not an absolute requirement for a two - sample t - test.

Answer:

A. The company randomly assigns a version to each tester.