Question 1 You have a blind date with a physics major. From your social networking experience, you know that 10% of physics majors are immature, 50% are narcissistic, and 90% are boring. Assume tha

Question 1 

 You have a blind date with a physics major. From your social networking experience, you know that 10% of physics majors are immature, 50% are narcissistic, and 90% are boring.  Assume that immaturity, narcissism, and boringness are independent events. Calculate the probability that your date is a boring narcissist. Round to the nearest hundreths place if a fraction. The probability is: 

A.  40% .

B. .1

C.  .45 

D. .8

E.  4.5 

F. the correct probability is a value not listed in alternatives "a" through "e"

Question 2 

You have a jar with ten gumballs. Five are red, three are white, and two are green. You pick two gumballs in a row. After picking the first gumball you place it back into the jar and then select your second gumball. What is the probability, p, of drawing two red gumballs in a row? Round to the nearest hundredths place if a fraction.

A.  p = .04

B.  p = .09 

C.  p = .1

D.  p = .25

E.  p = .5

F.  the correct probability is a value not listed in alternatives "a" through "e"

Question 3 

 You have 30 marbles, ten are blue, eight are red, nine are white, and three are green. You pick one marble at random and then put it back into the jar. Then you pick a second marble at random.  What is the probability, p, of drawing two green marbles in a row here? Round to either the nearest tenths or hundredths place if a fraction.  

A.  .43

B. 66

C.  .54

D. .01

E.  the correct answer is a value not listed in alternatives “a” through “d”

Question 4 

An introductory psychology class has 9 freshman males, 15 freshman females, 8 sophomore males, and 12 sophomore females. You randomly select two students in a row. After picking the first student you put him or her back into the classroom and then randomly select the second. What is the probability, p, of picking two males in a row? Round to the nearest hundredths place if a fraction

A. p = .15

B.  p = .19

 C. p = .24

D.  p = .34

E. p = .55 

F. the correct probability is a value not listed in alternatives "a" through "e"

Question 5 

 After conducting a statistical test on the ability to match names with faces, you conclude that the mean score of males differs significantly from the mean score of females. You have:

 A.  accepted the null hypothesis 

B. retained the alternate hypothesis

C. rejected the alternate hypothesis 

D. rejected the null hypothesis

Question 6 

 You believe that eating 5 pixie sticks in a row will increase a 10-year old’s hyperactivity behavior within 30 minutes after consumption. Which of the following is an example of an appropriate alternate hypothesis? 

A. Eating 5 pixie sticks has no effect on hyperactivity levels in ten-year-old children. 

B. Eating 5 pixie sticks increases hyperactivity levels in ten-year-old children.

Question 7 

 A standard deck of cards (without Jokers) has 52 cards.  Of these, 13 cards are red diamonds, 13 are red hearts, 13 are black spades, and 13 are black clubs.  You draw a card at random, look at it, and replace it.  Then you randomly draw a second card.  Calculate the probability of having drawn two spades in a row. Round to the nearest hundredths place if a fraction.  The probability is: 

A.  .06

B.  .01

C.  .25

D.  .5

E.  the correct probability is a value not listed in alternatives “a” through “d”

Question 8 

You have a blind date with a physics major. From your social networking experience, you know that 10% of physics majors are immature, 50% are narcissistic, and 90% are boring.  Assume that immaturity, narcissism, and boringness are independent events. Calculate the probability that your date is an immature bore. Round to the nearest hundreths place if a fraction. The probability is:

A. 1.0 

B. .09

C.  .5 

D. .9 

E. the correct probability is a value not listed in alternatives "a" through "d"

Question 9 

 Having conducted a rather extensive study aimed at determining whether there is a gas pocket 10,000 feet below ground, an geologist for Apache proposes that there “is gas below” and encourages the production unit to go ahead and drill a well on this site.  Ten million dollars are invested and a well is drilled to 10,000 feet…………but there is no gas.  The engineer was truly in error.  The null hypothesis that “there is no gas down below” was true. The fact that the researcher made this erroneous conclusion that there was gas down below is an example of: 

A. a power error 

B. a population error

 C. a beta error 

D. an alpha error

Question 10 

When untreated during their lifetimes, a certain strain of cancer susceptible rats has an average lifespan of 134 days. To determine the effects of a new potentially cancer-retarding drug, a new study is being conducted. In this study, which of the following is an example of an appropriate alternate hypothesis? 

A. The new drug does not increase the lifespan of rats. 

B. The new drug will increase the lifespan of rats