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TLS Online TPP Program

#Question id: 10619

Which of the following is incorrect?

#Section 1: Ecology
  1. age-specific rates of survival and fecundity remain unchanged; the population eventually assumes a stable age distribution
  2. Type III survivorship curve is the result of a high initial survival rate, which then falls off abruptly with age as the age-specific mortality rate increases
  3. The natural enemies hypothesis suggests that natural enemies may reduce densities of the strongest prey competitors
  4. There is indirect proportional of relationship between average plant weight and density in populations, referred to as a self-thinning curve
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TLS Online TPP Program

#Question id: 16884

#Section 3: Mathematics and Quantitative Ecology

A prospective observational study on the relationship between sleep deprivation and heart disease was done by Ayas, et. al. (Arch Intern Med 2003). Women who slept at most 5 hours a night were compared to women who slept for 8 hours a night (reference group). After adjusting for potential confounding variables like smoking, a 95% confidence interval for the relative risk of heart disease was (1.10, 1.92). Based on this confidence interval, a consistent conclusion would be
TLS Online TPP Program

#Question id: 16885

#Section 3: Mathematics and Quantitative Ecology

Consider a random sample of 100 females and 100 males. Suppose 15 of the females are left-handed and 12 of the males are left-handed. What is the estimated difference between population proportions of females and males who are left-handed (females − males)? Select the choice with the correct notation and numerical value.
TLS Online TPP Program

#Question id: 16886

#Section 3: Mathematics and Quantitative Ecology

A result is called “statistically significant” whenever
TLS Online TPP Program

#Question id: 16887

#Section 3: Mathematics and Quantitative Ecology

The confidence level for a confidence interval for a mean is
TLS Online TPP Program

#Question id: 16888

#Section 3: Mathematics and Quantitative Ecology

This is an example of:
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.)