更多"There is a 30 percent probability o"的相关试题:
[单项选择]The probability of A is 0.4. The probability of AC is 0.6. The probability of (B|A) is 0.5, and the probability of ( B| AC) is 0.2. Using Bayes' formula, what is the probability of ( A|B)（）
A. 0.625.
B. 0.875.
C. 0.125.
[单项选择]Acid rain
A. immediately kills trees and affects aquatic life in lakes and rivers.
B. deposits various metals iron, mercury, aluminum into the soil.
C. kills forests by weakening them and reduces fish populations.
D. releases sulfur dioxide, nitrogen oxide and into the atmosphere.
[单项选择]A probability function:（）
A. only applies to continuous distributions.
B. specifies the probability that the random variable takes on a specific value.
C. is often referred to as the "cdf. "
[单项选择]For an unconditional probability（）
A. there are at least two events.
B. the joint probability rule is important.
C. there is only one random variable of concern.
[单项选择]In providing discharge teaching for the client after a modified radical mastectomy, the nurse should instruct the client that she might need to modify or avoid which of the following activities
A. Shampooing her dog.
B. Caring for her tropical fish.
C. Working in her rose garden.
D. Taking a late-evening swim.
[单项选择]Use the following probability distribution to calculate the expected return for the portfolio.（）
A. 2.5%
B. 6.6%
C. 4.3%
[单项选择]After preparing the probability distribution of cost outcome for a project, the estimate, with a 15% probability of being exceeded, is approximately one standard deviation （）.
A. below the mean
B. above the median
C. above the mean
D. above the median
[单项选择]A user reports that printed pages are smearing after the pages come out of a laser printer. Which of the following is the MOST likely problem?（）
A. The corona wire is not supplying the correct voltage.
B. The fuser is not reaching the correct temperature.
C. The paper is card stock and is too thick.
D. The paper has a humidity content that is too low.
[单项选择]The probability of each of three independent events is shown in the table below. What is the probability of A and C occurring, but not B（）
A. 15%
B. 42%
C. 8.9%.
[单项选择]The prices of all the shares fell sharply just after a few ______ when the news came that the war had broken out.
A. transports
B. transmissions
C. transitions
D. transactions
[单项选择]In mild winters apple buds began to break soon after Christmas, leaving them ______ to frost damage.
A. reluctant
B. tough
C. hostile
D. vulnerable
[单项选择]Which of the following is NOT a probability distribution（）
A. Flip a coin: P(H)=P(T)=0.5.
B. Roll an irregular die: P(1)=P(2)=P(3)=P(4)=0.2 and P(5)=P(6)=0.1.
C. Zeta Corp. : P(dividend increases)=0.60, P(dividend decreases)=0.30.
[单项选择]If two events are independent, the probability that they both will occur is:（）
A. 0.00.
B. 0.50.
C. Cannot be determined from the information given.
[单项选择]—There has been no rain for months. Will it rain soon —______. The crops are in great need of water.
[单项选择]Mrs. Hanson couldn't go to college immediately after she graduated from high school because ______.
[单项选择]The team is going out to hold a party tomorrow after it ______ the project.
A. completes
B. completed
C. will complete
D. will have completed
[单项选择]What makes rain fall
[单项选择]If the probability of a Type I error decreases, then the probability of:（）
A. incorrectly rejecting the null increases.
B. a Type Ⅱ error increases.
C. incorrectly accepting the null increases.
