-alug c. Find the rejection region for the hypothesis test, using e. Do the test results indicate that the safe-driver ↑ d. State the appropriate conclusion, in the words of the tation was effective in helping students feel more con- f. The distribution of response scores (on a 7-point scale) fident that they can resist their friends' persuasion to this impact the validity of the hypothesis test? Why or derived from the test to be valid? 8.38 friends' persuasion you confident that you can resist your to drive faster?" Each response was measured on a 7-point Scale, from 1 = "definitely no" to 7 = "definitely yes. The data were collected 5 months after the students had attended a safe-driver presentation. The psychologists re- ported a sample mean response of 4.98 and a sample stan- dard deviation of 1.62. Suppose it is known that the true mean response of students who do not attend a safe-driver %3D ered ing Apresentation is µ = 4.7. 1.29. a. Set up the null and alternative hypotheses for test- iliel ing whether the true mean student-driver response thesis He 5 months after a safe-driver presentation is larger than 4.7. b. Calculate the test statistic for the hypothesis test. e Find the rejection region for the hypothesis test, using a LOS a = .05.iv 0 nohsivob problem. presen- Don was effective in helping students feel more con- 20. drive faster? Explain. why not?
Permutations and Combinations
If there are 5 dishes, they can be relished in any order at a time. In permutation, it should be in a particular order. In combination, the order does not matter. Take 3 letters a, b, and c. The possible ways of pairing any two letters are ab, bc, ac, ba, cb and ca. It is in a particular order. So, this can be called the permutation of a, b, and c. But if the order does not matter then ab is the same as ba. Similarly, bc is the same as cb and ac is the same as ca. Here the list has ab, bc, and ac alone. This can be called the combination of a, b, and c.
Counting Theory
The fundamental counting principle is a rule that is used to count the total number of possible outcomes in a given situation.
Please answer parts a-e
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