You are testing the null hypothesis that the average money that BC student has in his or her pocket is $20 against the alternative that it’s greater than that. You are testing at a 5 percent significance level. We know the population variance is 81 dollars squared. You take a random sample of 100 students.

i. Calculate the power of this test if the true mean is $23. Represent it graphically.

For parts, ii, iii, iv and v, please take the information above and change only the one item that is described. (i.e. compare part iii to our answer and values in part i, not to part ii.) Also, show me how your diagram would change if you were drawing the true distribution of sample means and the distribution under the null hypothesis.

ii. What does the power equal if we changed α to .10?

iii. What if we changed our sample size to 36?

iv. What if the population variance was really 25 dollars squared.

v. What if the true population mean is $22?

•Research/investigate existing teaching models, procedures, and methods, etc. that used to demonstrate the concept of third angle projection to students/learners

. •Point out the limitation of the existing models, procedures or methods used. Alternatively critique the existing models and consequently list their shortcomings.

•Finally state how you hope to rectify some of the limitations you identified in the existing models above.

•Draw conclusions from your work

1. Name 4 types of sexually transmitted pathogens.

2. STI’s cannot be transmitted unless a person has signs & symptoms of the disease? True or False

3. All are reasons college students are at high risk for STI’s EXCEPT? A. College students underestimate their risk of STI’s. B. Students participate in unprotected sex because of their lack of knowledge regarding STI’s. C. Students often feel the risk factors do not apply to them despite their knowledge of STI’s. D. Students participate in unprotected sex as a direct result of being intoxicated.

4. Which one of the following statements regarding Sexually Transmitted Infection is FALSE? A. STI’s are often silent diseases. B. STI’s are high on college campuses & nursing homes. C. STI’s are linked to infertility. D. All STI’s can be cured with treatment.

5. The highest risk of sexual behavior is? A. Fellatio. B. Hand-Genital Contact. C. Unprotected Anal Sex. D. Group Masturbation.

6. The key to preventing a Sexually Transmitted Infection is A. Screening B. Treatment C. Education D. Diagnosis

7. The second defense against STI’s after abstinence is A. serial monogamy. B. consistent use of a condom. C. avoid coitus. D. avoid cunnilingus.

8. List at least 3 place you can get tested for an STI. A. ________________________ B. ____________________ C. ________________________

8. Sexual responsibility includes: A. _________________________ B. _______________________ C. _________________________ D. _______________________

24)____________       An SAT prep course claims to improve the test scores of students. The

                                     table shows the scores for seven students the first two times they took                    

25)_____________     the verbal SAT. Before taking the SAT for the second time, each

                                     student took a course to try to improve his or her verbal SAT scores.  

                                     Test the claim at a = .05. List the a) null hypothesis b) average difference       

                                   between the scores        

26)______________   In a crash test at five miles per hour, the mean bumper repair cost for 14

                                    midsize cars was $547 with a standard deviation of $85. In a similar test               

                                    of 23 small cars, the mean bumper repair cost was $347 with a standard                      

27)______________ deviation of $185. At a = 0.05, can you conclude that the mean bumper

                                    repair cost is the same for midsize cars and small cars? List the

                                    26) p-value 27) accept or reject.

A week before a certification election, a WalShop store manager (who resides in Walnut) walks by a Rancho Cucamonga church in order to observe a union organizing meeting she read about on a bulletin board in the employee cafeteria.  According to her rough count, approximately a hundred of the 250 employees at the store were attending.  She looks for familiar faces from the sidewalk outside (and makes notes of what she observes) but does not attempt to make contact with anyone going inside the church.    After several nervous employees called the manager’s presence out to the union supporter, Arturo Cruz, Cruz comes outside and orders the manager to leave.  After a brief argument, the manager departs but not before wagging her finger at the church and shouting “Unions will be the death of us all!”   The union loses the election by a close margin (120 in favor of certification, 130 against).  Shortly thereafter, the union files an unfair labor charge against WalShop claiming that the supervisor’s presence and words constituted a “threat of reprisal” and thereby invalidated the election.  In testimony before the Administrative Law Judge (ALJ), the supervisor states she was merely in the neighborhood and walked by out of curiosity.  Management tells the ALJ that it neither ordered nor was aware of the supervisor’s action at the time it occurred. A regional vice president admitted, however, that he received a memo from the manager the day after the meeting describing what she had seen (including the names of some prominent employees in attendance) but claims to have taken no action based on the memo.   Does the union need to prove that an unfair labor practice charge occurred in order to invalidate the election?  Without regard to whether an unfair labor practice can be proven, should the election be ruled invalid (be sure to name the appropriate test the NLRB uses for judging elections and analyze the facts to determine whether that test can be proven)?  Be sure to explain your answer.

Suppose X,Y,Z ⊆ U. If X is the set of all people who played hockey in high school, Y is the set of all out-of-state students, and Z is the set of all international students, describe the following sets in words:

(a) X′ ∪Y ∪Z   (b) X ∩ Y ′ ∩ Z′   (c) (X∩Y′)∪Z′

Consider the set A = {b, c, d}.

(a) How many subsets does A have? (b) List all subsets of A.

Suppose that a committee of 3 people is chosen from 10 people, including Daniel.

(a) How many total committees are there? (b) How many committees include Josh?

(c) Does it seem likely Josh will be chosen for the committee if it is done randomly? Explain.