BA6933 Week 2 Quiz (Chapter 4 & 5 and 6)
a. larger than the probability of tails. b. 0. c. 1 d. 1 2. The intersection of two mutually exclusive events a. can be any positive value. b. can be any value between 0 to1. c. must always be equal…
a. larger than the probability of tails. b. 0. c. 1 d. 1 2. The intersection of two mutually exclusive events a. can be any positive value. b. can be any value between 0 to1. c. must always be equal…
1.For a standard normal distribution, the probability of obtaining a z value of less than 1.6 is 0.945201 2.The assembly time for a product is uniformly distributed between 6 and 10 minutes. The probability of assembling the product in 7 minutes or…
a. 2 b. 4 c. 16 d. 12 2. Revised probabilities of events based on additional information are a. marginal probabilities. b. complementary probabilities. c. joint probabilities. d. posterior probabilities. 3. If P(A) = 0.62, P(B) = 0.47, and P(A…
Exhibit 8-3 1.A random sample of 81 automobiles traveling on a section of an interstate showed an average speed of 60 mph. The distribution of speeds of all cars on this section of highway is normally distributed, with a standard…
1. The following is the frequency distribution for the speeds of a sample of automobiles traveling on an interstate highway. 50.000 2. Data collected over several time periods are _____ data. time series 3.The expression used to compute an interval estimate…
a. .60 and .02 b. .60 and .14 c. 320 and .02 d. 192 and 45 2. A finite population correction factor is needed in computing the standard deviation of the sampling distribution of sample means a. whenever the sample…
1.Which of the following is usually bundled as a hidden component of a freeware? Spyware 2.Which of the following are characteristics of spyware? (Choose all that apply.) Secretly collects information about users Negatively affects confidentiality Negatively affects availably Tracking cookies…
1._____ are in charge of presenting data to the end user in a variety of ways.The correct answer is: Data visualization tools 2.______ focuses on filtering data as it enters the system to determine which data to keep and which to…
1._____ is the central activity during the parsing phase in query processing.The correct answer is: Query optimization 2._____ distributed database management systems (DDBMS) integrate multiple instances of the same DBMS over a network.The correct answer is: Homogeneous 3._____ fragmentation allows a user to break…
a. 40 b. 15 c. 1.875 d. 5 2. Random samples of size 17 are taken from a population that has 200 elements, a mean of 36, and a standard deviation of 8. The mean and the standard deviation of…