N = 20 sum of d= 96 sum (d-d)^2 =560 Twenty managers were selected for a test to determine whether exposure to ethics training changed managerial decision results. At the beginning of the day, the managers were presented with a case and scored on the basis of their answers to some ethical questions. Following a day of training, they were presented with a similar situation and given a second score based on their responses. Use the data below for a difference between means of paired samples test of H0: μ1 = μ2 n = 20 a. Find d-bar, sd, and t b. Did the training result in a significant change in the managers’ decision-making? Use a level of significance of 0.05.

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In tossing one coin 10 times, what are your chances for tossing a head? a tail? 2. in tossing one coin 100 times, what are your chances for tossing a head? a tail? 3. in tossing one coin 200 times, what are your chances for tossing a head? a tail? deviation = ((absolute value of the difference between expected heads and observed heads) + (absolute value of the difference between expected tails and observed tails)) divided by total number of tosses. this value should always be positive. 4. what is the deviation for 10 tosses? 5. what is the deviation for the 100 tosses? 6. what is the deviation for 200 tosses? 7. how does increasing the total number of coin tosses from 10 to 100 affect the deviation? 8. how does increasing the total number of tosses from 100 to 200 affect the deviation? 9. what two important probability principles were established in this exercise? 10. the percent of occurrence is the obtained results divided by the total tosses and multiplied by 100%. toss the coins 100 times and record your results. calculate the percent occurrence for each combination. percent head-head occurrence: percent tail-tail occurrence: percent head-tail occurrence:

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online