5.A high school science teacher has 78 students. Of those students, 32 are in the band and 38 are on a sports team. There are 16 students who are not in the band or on a sports team. One student from the 78 students will be selected at random. Let event B represent the event of selecting a student in the band, and let event S represent the event of selecting a student on a sports team. Are B and S mutually exclusive events?

Question

THE WEEKLYINCOMEOF ASSISTANTMANAGERSOF OUR LOCAL BANKS ARE NORMALLY DISTRIBUTED WITH A MEANOF P 40,000

AND A STANDARD DEVIATIONOF P 5000.

38.THE Z - SCORE FOR AN INCOMEOFP 30000 IS

Group of answer choices

-1.75

-2.5

-1.5

-2.25

-2

39.FROM PROBLEM38THE Z - SCORE FOR AN INCOMEOFP 42000 IS

Group of answer choices

0.6

0.5

0.4

0.7

0.3

CONSIDER THE NORMALDISTRIBUTION IFIQs WITHMEANOF 100AND A STANDARDDEVIATION OF 16.

40.THEPERCENTAGE OFIQs GREATERTHAN92IS

Group of answer choices

72.5%

65.88%

73.89%

66.75%

69.15%

41.FROM PROBLEM 40THE PERCENTAGE OFIQsBETWEEN92AND 120IS

Group of answer choices

57.55%

56.35%

59.48%

58.90%

55.88%

42.FROM PROBLEM40THEPERCENTAGE OFIQsLESSTHAN 120 IS

Group of answer choices

0.8944

0.7984

0.7595

0.9856

0.8875

Question 43

LET US CONSIDER A STUDY THAT AIMS TO DETERMINE IF THERE ISA BENEFICIAL EFFECT OF DRILL ON THE PERFORMANCE OF Ss IN A DIGIT-

SPAN TEST .A SAMPLE OF 15 SUBJECTS IS GIVEN 5 - DIGIT SPAN TEST TRIALS . TRIAL 1 SERVESAS THE BASELINE DATA WHICH IS ALSO THE

BASIS FOR THE FIRST MEASUREMENT ( PRETEST ) . TRIALS 2, 3 AND 4 SERVE AS DRILLS AND TRIAL 5 SERVES AS THE BASIS FOR THE SECOND

MEASUREMENT ( POST TEST ) .THEDATAOBTAINEDARE ASFOLLOWS:

TRIAL 1TRIAL 5

56

55

67

48

710

54

68

77

67

46

35

24

59

58

46

DETERMINE IF THE DRILLS HAD A POSITIVE EFFECT ON THEPERFORMANCE OF THESsIN THE DIGITSPAN TEST. USE .01LEVEL OF

SIGNIFICANCE .

43.THE NULL HYPOTHESISIS

Group of answer choices

Ho : U1 IS NOT EQUAL TO U5

Ho : U1 = U5

Ho : U1 < U5

Ho : U1 > U5

Ho : U1 = 74

44.FROMPROBLEM 43THEHais

Group of answer choices

Ha : U5 > U1

Ha: U1 < U5

Ha : U1 = U5

Ha: U5 < U1

Ha: U1 > U5

45..FROM PROBLEM43THELEVEL OF SIGNIFICANCEIS

Group of answer choices

0.005

0.05

0.001

0.10

.01

46.FROMPROBLEM43THEDEGREESOF FREEDOM IS

Group of answer choices

12

11

15

13

14

47. FROM PROBLEM 43THE TABULAR VALUE IS

Group of answer choices

1.96

2.997

1.645

2.33

2.65

48.FROM PROBLEM 43THE COMPUTED VALUE IS

Group of answer choices

3.49

3.98

4.25

3.79

4.67

49.FROM PROBLEM NO. 43THE DECISION IS

Group of answer choices

REJECT Ha

ACCEPT Ho

REJECT Ho

NO DECISION

REJECT BOTH Ho AND Ha

50.FROM PROBLEM 43 THE CONCLUSION IS

Group of answer choices

THAT THE DRILLS HAD A POSITIVE EFFECT ON THE PERFORMANCE OF THE Ss IN THE DIGIT SPAN TESAT , AS EVIDENCED BY THE SIGNIFICANTLY GREATER MEAN IN THE POST TEST THAN IN THE PRETEST

NO CONCLUSION

PRETEST IS SAME AS POST TEST

THAT THE DRILLS HAD NO SIGNIFICANT EFFECT ON THE PERFORMANCE OF THE Ss IN THE DIGIT SPAN TEST

THAT THE DRILLS HAD A NEGATIVE EFFECT ON THE PERFORMANCE OF THE Ss IN THE DIGIT SPAN TEST

1. The probability that a new iPhone will stop working in less than 5 years is 0.04. The probability that a new iPhone is damaged during delivery and stops working in less than 5 years is 0.05. The probability that a new iPhone is damaged during delivery is 0.10. Given that a new iPhone is damaged during delivery, what is the probability that it stops working in less than 5 years?
2. According to theNational Safety Council, many drivers frequently do not use seat belts.It is estimated that the probability that a driver uses a seat belt every time they drive is 0.72.Find the probability that if three randomly selected drivers are chosen, at least one of them will not be wearing a seat-belt.
3. A corporation is considering purchasing the mineral rights to two different mountains. The probability that it will purchase the mineral rights to the first mountain is 0.55. The probability that it will purchase the mineral rights to the second mountain is 0.4. Assuming the decisions to purchase the mineral rights to each mountain are made independently, what is the probability that it will purchase the mineral rights to exactly one of the two mountains?
4. According to a report for veterinarians in the United States, 36.5 percent of households in the United States own dogs and 30.4 percent of households in the United States own cats. If one household in the United States is selected at random, what is the probability that the selected household will own a dog or a cat?

In a meat processing plant with 1,200 employees in an impoverished county, records showed that there were 20 deaths over a one-year period. Analyses showed that in a similarly aged population (of the same size) in a nearby town, one would have only expected to see 16 deaths. How would one describe mortality at this plant in such a way as to account for the workers' ages?

Select one:

a. As a mortality rate of 1.7%

b. As a mortality rate of 1667 per 100,000

c. SMR=125

d. SMR=66.7

e. You would need to know the person years at the plant.

32. The sample mean value is represented with what type of letter?

a) Greek letter

b) Roman letter

c) Latin letter

d) None of the above

33. What statistical concept is used to determine if a pattern of linear data is the linear line "good fit"?

a)Sum of Squares Residual

b)Sum of Squares Total

c)Coefficient of Determination

d)Z scores

34.If the likelihood of one outcome is not affected by the occurrence of another outcome, the outcome are:

a)Similar

b)Relational

c)Dependent

d)Independent

35. Three pieces of fruit are available at a snack bar.There are apples, bananas, and pears. If .30 people request an apple, and .25 people request a banana. What is the probability that the next person to request a piece of fruit will request an apple or a banana?

a)100 %

b)27.5%

c)55%

d)5%

36. The primary purpose of a Probability Distribution is?

a)to describe the distribution of individual data characteristics in a population ".

b)draw a Scatterplot

c)find Residual values

d)transform a linear relationship between two variables to a curved relationship

38. Population Distribution data types include:

a)numerical datab) categorical data

c)discrete datad)all of the above

39. The Central Limit Theorem describes which of the following?

a) the measure of central tendency

b) the outliers in a scatter plot

c) when the number of observations is sufficiently large

d) None of the above

40. A Normal Probability Plot is a scatter plot of:

a) Normal score, Observed value pairsb) Bar chart, Pie chart

c) Polynomial regression, Transformationsd) Probability, Simulations

41.A Density Histogram is used to summarize the distribution of:

a)Discrete numerical variablesb) Continuous numerical variables

c)Only qualitative variablesd) All of the above

42. A Normal distribution is___________________ shaped.