What type of sweetener do flies prefer? A scientist divides the flies into different groups and gives each group only water with a certain type of sweetener in it for 3 days. The scientist then does a test on each group to see how well the flies can fly through a maze.

Professor Fair believes that extra time does not improve grades on exams. He randomly divided a group of 300 students into two groups and gave them all the same test. One group had exactly 1 hour in which to finish the test, and the other group could stay as long as desired. The results are shown in the following table. Test at the 0.01 level of significance that time to complete a test and test results are independent. Time A B C F Row Total 1 h 22 41 65 12 140 Unlimited 17 49 86 8 160 Column Total 39 90 151 20 300   (ii) Find the sample test statistic. (Round your answer to two decimal places.)

You want to study the car traffic on the road-map of London. Which type of network best represent the data? Select one: a. Bipartite b. Weighted C. Undirected d. Unweighted

Directions: Toss 5 coins 20 times simultancously and observe the number of heads that will occur. The possible values of X or the number of heads in 5 coins tossed are 0, 1, 2, 3, 4 and 5. Activity 1. List all the outcomes in the table Tossed # Outcome Coin 3 Coin 1 Coin 2 Number of Heads X Coin 4 Coin 5 3 4 8 9. 10 11 12 13 14 15 16 17 18 19 20 Activity 2. Complete the table. Number of Heads Actual Probability Relative Frequency [Frequency of Occurrence + Total Number of Times the Coins Were Tossed] (Approximate probability) Frequency of X Occurrence 0.031 0.156 1 0.313 0.313 3 0.156 0.031 4 5 Task: 1. Compare the approximate probability values and the actual probability values. 2. How would you make the approximate probability values very close to the actual probability values?

wants to know if it is better for Instructor Pilots to give flight students feedback in the airplane immediately after each maneuver rather than to wait till they are on the ground and debriefing. Six student pilots are selected. Each student receives immediate feedback on half of their flights and receives delayed (after landing) feedback on the other half of their flights. Average scores for the student’s evaluations are listed in the table below. Show work. Student Pilot Score for Immediate Feedback Score for Feedback Received After on the Ground Student Pilot A 4 2 Student Pilot B 3 4 Student Pilot C 5 2 Student Pilot D 3 3 Student Pilot E 5 3 Student Pilot F 5 2 a. Test the hypothesis that the student pilots receive higher evaluations on flights where they received immediate feedback compared to delayed (after landing) feedback. Use α =.05. Use the four steps of hypothesis testing. b. Calculate Omega squared (ώ2)

I have attached a picture of the question. Please answer section C and D of the question.

- Input the data in IBM SPSS - State the step by step process and explain Case analysis: Workers at a tree farm decided to test the efficacy of three fertilizer mixtures (A,B and C) on the growth of Norway maple seedlings, Acer platanoides. The table below contains the heights of seedlings (in feet) for the three fertilizer treatments. Determine if there are significant differences in the heights among the three treatments. Use also the appropriate posthoc for mean separation, if necessary. A 2.0 2.1 2.4 ~23m 2.8 489 2.9 3.1 3.2 3.7 278 AW 3.8 4.1 STATISTICAL TOOL USED: CONCLUSION: B 2.3 2.9 1.5 1.2 1.9 1.9 3.4 NW 2.1 2.6 2.4 с 3.1 1.5 2.2 2.9 1.7 2.1 2.8 1.5 2.8 2.2