更多"If X has a normal distribution with"的相关试题:
[单项选择]If a normal distribution has a mean of 10 and a variance of 40, a standardized value of 0.5 corresponds to an observation value that is closest to:（）
A. 6.84.
B. 13.16.
C. 20.00.
[单项选择]A distribution that has positive excess kurtosis:（）
A. is more peaked than a normal distribution.
B. is less peaked than a normal distribution.
C. has thinner tails than a normal distribution.
[单项选择]A normal distribution can be completely described by its:（）
A. mean and variance.
B. skewness and kurtosis.
C. mean and mode.
[单项选择]Compared to a normal distribution, a lognormal distribution is least likely to be:（）
A. skewed to the left.
B. skewed to the right.
C. useful in describing the distribution of stock prices.
[单项选择]A distribution that is more peaked than normal is:（）
A. skewed.
B. platykurtic.
C. leptokurtic.
[单项选择]The lower limit of a normal distribution is:（）
A. negative infinity.
B. zero.
C. one.
[单项选择]A distribution of returns that has a greater percentage of small deviations from the mean and a greater percentage of large deviations from the mean compared to a normal distribution:（）
A. is positively skewed.
B. has positive excess kurtosis.
C. is negatively skewed.
[单项选择]Normal Corp. has a current ratio above 1 and a quick ratio is less than 1. Which of the following actions will increase the current ratio and decrease the quick ratio Normal Corp.:（）
A. buys fixed assets on credit.
B. uses cash to purchase inventory.
C. pays off accounts payable from cash.
[单项选择]A 23-year-old primigravida client has a normal vaginal delivery. The next day, the nurse assesses the client's lochia for color, amount, and the presence of clots. Which of the following best describes lochia on the first postpartum day ？（）
A. Dark red (loehia rubra), large amount, with many clots.
B. Pink (lochia serosa), moderate amount, no clots.
C. White (lochia alba), scant amount, no clots.
D. Dark red (lochia rubra), moderate amount, with a few small clots.
[单项选择]x-y=3
2x=2y+6
The system of equations above has how many solutions ？（）
A. None
B. Exactly one
C. Exactly two
D. Exactly three
E. Infinitely many
[单项选择]Distribution information involves making information available to project stakeholders in a timely manner．Which of the following tools can you use in the distribution information process
A. Organizational process asset
B. Communication metho
C. Performance reportin
D. Communications requirement analysi
[单项选择]A multivariate distribution :（）
A. gives multiple probabilities for the same outcome.
B. applies only to normal distributions.
C. specifies the probabilities associated with groups of random variables.
[单项选择]Sales were not good because distribution problems led to a slight drop in profits. The company had problems with
[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]
Advertising plays a major role in the distribution of goods from manufacturers to consumers.
It provides an effective way for sellers to inform buyers about products. Advertising thus helps manufacturers sell their products and benefits consumers by providing them with shopping information.
Advertising also helps the economy grow by stimulating demand for new products. Manufacturers spend much money to develop new products. Through advertising, they can speed up the process of creating a market for a product and so recover their costs more quickly. Fewer new products would be developed if manufacturers could not use advertising to help sell the products.
Advertisers include the expense of advertising in the sales price of a product. In some cases, advertising raises the price of a product. In other cases, advertising helps lower prices by creating the mass demand that supports mass production. Successful advertising makes many people want a product. By mas
A. Broadcasters and publishers do not want to make open bad news about their advertisers.
B. Stations are too much interested in seeking money from their advertisers.
C. Programs are not so appealing to more and more audience.
D. Stations will not broadcast enough educational programs.
