Practice Questions

TLS Online TPP Program

#Question id: 16902

A large company examines the annual salaries for all of the men and women performing a certain job and finds that the means and standard deviations are $32,120 and $3,240, respectively, for the men and $34,093 and $3521, respectively, for the women. The best way to determine if there is a difference in mean salaries for the population of men and women performing this job in this company is

#Section 3: Mathematics and Quantitative Ecology

to compute a 95% confidence interval for the difference.
to subtract the two sample means.
to test the hypothesis that the population means are the same versus that they are different.
to test the hypothesis that the population means are the same versus that the mean for men is higher.

More Questions

TLS Online TPP Program

#Question id: 11765

#Section 1: Ecology

The population density of a particular insect species was determined to be 15,000 adults per hectare in the summer of 1996, 21,000 adults per hectare in the summer of 1997, and 29,400 adults per hectare in the summer of 1998. Based on these population estimates, what is your estimate of λ, the annual rate of geometric growth?

TLS Online TPP Program

#Question id: 11851

#General Aptitude

The greatest number of four digits which is divisible by 15, 25, 40 and 75 is :

TLS Online TPP Program

#Question id: 16889

#Section 3: Mathematics and Quantitative Ecology

Assuming the conditions are met, based on the t-statistic of 1.80 the appropriate conclusion for this test using α = .05 is: (Table would be provided with exam.)

TLS Online TPP Program

#Question id: 10817

#Section 2: Evolution

Removal of a __________________ from a community affects community structure significantly.