A group of women suffering from various types of fears is given a therapeutic course to learn how to handle their fear. Before the beginning of the course they were asked to answer a questionnaire to measure their fear score. At the end of the course the women answer the questionnaire again as a follow up measure. The fear scores are used to produce the following: Pair 1(before - follow up) Mean Standard deviation df 2.520 4.417 2.853 24

A First Course in Probability (10th Edition)
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Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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A group of women suffering from various types of fears is given a therapeutic course to learn how to handle their
fear. Before the beginning of the course they were asked to answer a questionnaire to measure their fear score. At
the end of the course the women answer the questionnaire again as a follow up measure. The fear scores are used
to produce the following:
Pair 1(before - follow up)
Mean Standard deviation
It
df
2.520 4.417
2.853 24
i. How much lower on average did women score on the fear questionnaire after the course [Hint : al
02.520
03.52
04.52
04.417
ONone of these
ii. What is the sample size?
ONo enough information
O20
O25
O30
O24
iii. If the mean of the follow up score equals 3.52, Find the mean of the before score:
06.04
03.71
08.04
07.23
ONone of these
Transcribed Image Text:A group of women suffering from various types of fears is given a therapeutic course to learn how to handle their fear. Before the beginning of the course they were asked to answer a questionnaire to measure their fear score. At the end of the course the women answer the questionnaire again as a follow up measure. The fear scores are used to produce the following: Pair 1(before - follow up) Mean Standard deviation It df 2.520 4.417 2.853 24 i. How much lower on average did women score on the fear questionnaire after the course [Hint : al 02.520 03.52 04.52 04.417 ONone of these ii. What is the sample size? ONo enough information O20 O25 O30 O24 iii. If the mean of the follow up score equals 3.52, Find the mean of the before score: 06.04 03.71 08.04 07.23 ONone of these
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