Statistics - Advanced Statistics 'Quiz Grade 4

half of the observations in a data set are greater than the

Which of the following statements describe secondary internal data?

Which of the following statements is not true?

A large bank in a metropolitan area has a large number of secured loans on apartment facilities throughout the area. Local economic indicators suggest the percentage of vacant apartments ranges from 7% to 10%. Concerned about the borrowers' ability to

5

Equivalent groups typically are formed by

6

Which of the following considerations influences how well a statistic estimates a parameter?

7

The error of rejecting a true null hypothesis is _____

8

Measures of ____________________ are numbers that describe the scatter of the data or the extent to which the data values are spread out

9

Class limits are the:

10

A survey of business students who had taken the Graduate Management Admission Test (GMAT) indicated that students who have spent at least five hours studying GMAT review guides have a probability of 0.85 of scoring above 400 . Students who do not review have a probability of 0.65 of scoring above 400 . It has been determined that 70% of the business students review for the test

11

The sum of frequencies for all classes will always equal

12

Determine which of the following population size and sample size combinations would require the use of the finite population correction factor in calculating the standard error. A) N = 150; n = 25 B) N = 1500; n = 300 C) N = 2500; n = 75 D) N = 15,000; n = 1000

13

Using the data provided by Memorial Hospital, calculate the nosocomial infection rate for newborns. Round to two decimal places. Memorial Hospital January Statistics Discharges Adults & Children Newborn 1,984 213 Deaths Adults & Children Newborn 24 2 Nosocomial Infections Adults & Children Newborn 20 2 Community Acquired Infections Adults & Children Newborn 65 0

14

If only 30% of the customers move from server 1 to server 2, which dialog box will reflect this fact?

15

The Pearson correlation coefficient is used

16

A serious complication of binging and purging involves a low level of serum potassium that can lead to kidney failure and cardiac arrest. This condition is called:

17

When a Motorola executive said "That evaluation is …. perhaps the most cost-effective, value-added business consultation available anywhere in the world today" he was referring to a. ISO 9000 standards

18

Identify the major reason(s) for collecting and using statistical data.

19

Using involves observing behaviors occurring in natural settings without intruding into the situation

20

From the data provided, what is the median? Seaside HospitalDepartment of Medicine June Discharges Day # of Discharges Day # of Discharges Day # of Discharges 1 27 11 53 21 36 2 22 12 59 22 75 3 37 13 54 23 66 4 63 14 52 24 84 5 42 15 32 25 37 6 55 16 64 26 38 7 62 17 67 27 62 8 65 18 69 28 65 9 33 19 58 29 48 10 35 20 55 30 55

21

The probability that Luis will pass his statistics test is 0.58. Find the probability that he will fail his statistics test

22

var(kX<sub>i</sub>) = ________

23

Lamont took a psychology exam whose mean was 70 with standard deviation 5 . He also took a calculus exam whose mean was 80 with standard deviation 10 . He scored 85 on both exams. On which exam did he do better compared to the other students who took the exam?

24

In 2012 there were 5,138,349 live births in the United States. According to the WHO there were 640 documented maternal deaths in the United States. What is the maternal mortality rate per 100,000? Round to two decimal places.

25

A self-selected sample is the group of individuals who were randomly selected to be in the sample, then agreed to participate in the study

26

Which is used in the denominator for hospital infection rate?

27

The heights in feet of people who work in an office are as follows. Use the range rule of thumb to find the standard deviation. Round results to the nearest tenth

28

In your own words, briefly describe the function of aggregate planning

29

Suppose the current weather report for your area contains the following information. Specify the measurement scale for each of the variables. a . Temperature 84o b. Wind Speed 10 mph c. Wind Direction (from the) South d. Sky Description Sunny e. Molds Level High

30

Capacity Requirements Planning (CRP) is a Capacity planning activity. At which resource levels does CRP operate? (1). All Work Centers (2). Individual Machine (3). Company (4). Plants

31

The following estimated regression equation was developed relating yearly income (y in $1000s) of 30 individuals with their age (x1) and their gender (x2) (0 if male and 1 if female). y = 30 + .7x1 + 3x2 Also provided are SST = 1200 and SSE = 384 . The yearly income (in $) expected of a 24-year-old male individual is

32

As a general rule, the normal distribution is used to approximate the sampling distribution of the sample proportion only if the sample size n is greater than or equal to 30

33

Six Sigma represents a quality level of at most ____ defects per million opportunities

34

The ratio of MSR to MSE yields

35

Which type of sampling would primarily be used in exploratory research studies where there is no intention of making statistical inferences from the sample to the population?

36

A new client of yours, who is homosexual, tells you that he overheard his previous therapist make derogatory remarks about his sexual orientation to a co-worker. Your best course of action would be to.

37

Most of the scores are in the negative (low score) side of the distribution and the positive tail is extended because of the presence of a few high scores

38

Read the t statistic from the table of t distributions and circle the correct answer. A two-tailed test, a sample of 20 at a .20 level of significance; t = _____

39

Prior probabilities are the probabilities of the states of nature

40

Suppose a mathematician computed the expected value of winnings for a person playing each of seven different games in a casino. What would you expect to be true for all expected values for these seven games?