For each of the following, (a) state which two populations are being compared, (
ID: 3179603 • Letter: F
Question
For each of the following, (a) state which two populations are being compared, (b) state the research hypothesis, (c) state the null hypothesis, and (d) say whether you should use a one-tailed or two-tailed test and why. i. In an experiment, people are told to solve a problem by focusing on the details. Is the speed of solving the problem different for people who get such instructions compared to the speed for people who are given no special instructions? ii. Based on anthropological reports in which the status of women is scored on a 10-point scale, the mean and standard deviation across many cultures are known. A new culture is found in which there is an unusual family arrangement. The status of women is also rated in this culture. Do cultures with the unusual family arrangement provide higher status to women than cultures in general? iii. Do people who live in big cities develop more stress-related conditions than people in general?Explanation / Answer
13. (i).
(a) Population 1 : People who get instructions
Population 2 : People who are given no special instructions
(b) Research hypothesis : Speed of solving the problem is different for people who get instructions compared to the speed for people who are given no special instructions.
(c) Null hypothesis: Average speed of solving the problem for the people who get instructions = Average speed of solving the problem for people who are given no instructions.
(d) . Two Tailed test
ii.
(a). Population 1 : Women in (across different cultures) cultures in general
Population 2 : Women in an unusual family culture
(b). Research hypothesis : Status of women in unusual culture is higher than status of women in clutures in general.
(c). Null hypothesis : Mean status of women in unusual culture = mean status of women in cultures in general
(d).It's one tailed test.
iii.
(a).Population 1 : People in general
Population 2 : People live in big cities
(b) Research hypothesis : People live in big cities develop more stress-related conditions then the people in general
(c) Null hypothesis : Proportion of people with stress related conditions in big cities = Proportion of people in general with stress related condition
(d) One tailed test.
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