Many new stockbrokers resist giving presentations to bankers and certain other groups

Chapter 0, Problem 4

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Many new stockbrokers resist giving presentations to bankers and certain other groups. Sensing this lack of self-confidence, management arranged to have a confidencebuilding seminar for a sample of new stockbrokers and enlisted Career Boosters for a three-week course. Before the first session, Career Boosters measured the level of confidence of each participant. It was measured again after the three-week seminar. The before and after levels of self-confidence for the 14 in the course are shown below. Self-confidence was classified as being either negative, low, high, or very high. Before After Before After Stockbroker Seminar Seminar Stockbroker Seminar Seminar J. M. Martin Negative Low F. M. Orphey Low Very high T. D. Jagger Negative Negative C. C. Ford Low High A. D. Hammer Low High A. R. Utz Negative Low T. A. Jones, Jr. Very high Low M. R. Murphy Low High B. G. Dingh Low High P. A. Lopez Negative Low D. A. Skeen Low High B. K. Pierre Low High C. B. Simmer Negative High N. S. Walker Low Very high The purpose of this study is to find whether Career Boosters was effective in raising the self-confidence of the new stockbrokers. That is, was the level of self-confidence higher after the seminar than before it? Use the .05 significance level. a. State the null and alternate hypotheses. b. Using the .05 level of significance, state the decision ruleeither in words or in chart form. c. Draw conclusions about the seminar offered by Career Boosters