首頁 > 線上測驗 > 96-100年研究所統計學歷屆試題(資管、工工、工管)(一年期) > 98年國立成功大學交通管理研究所,電信管理研究所統計學
If a population distribution is skewed to the left, then given a random
sample from that population, one would expect that:
The mode would be less than the mean.
The mode would be less than the median.
The median would be less than the mean.
The median would be greater than the mean.
If the Z statistic (critical value) is incorrectly used in lieu of the t
statistic when comparing two means from independent populations
using small samples, the chance of committing a Type II error _______.
Increases.
Decreases.
Remains the same
On the average, females earn $4200 less.
On the average, males earn $4200 less.
On the average, salaries do not differ.
On the average, males have 4.2 more years of experience.
On the average, females have 4.2 more years of experience.
In one-way ANOVA analysis, as the between-treatment variation
decreases, the probability of rejecting the null hypothesis ______.
Increases
Decreases
Remains the same
An investor holds two stocks, each of which can rise(R), remain unchanged
(U), or decline (D) on a particular day. Assuming that these stocks move
independently and all outcomes are likely, please find the probability that
both stocks rise; that both stocks decline; that exactly one tock declines.
A high-security bank installation has installed four security systems to
detect attempted break-ins. The four security systems operate
independently for each other, and each has a 0.9 probability of detecting an
attempt break-in. Assume an attempt break-in occurs. Please find the
probability that at least one of the four security systems will detect it?
In a one-way analysis of variance with three treatments, each with five
measurements, in which a completely randomized design is used, compute
the F statistic where the sum of squares treatment is 17.0493 and the sum
of squares error is 8.028.
可觀看題目詳解,並提供模擬測驗!(免費會員無法觀看研究所試題解答)