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TLS Online TPP Program

#Question id: 12343

Hybrids between some related species of plants are sterile because the parent plants had different chromosome numbers. Occasionally the chromosome number of such a hybrid  plant doubles spontaneously. Which of the following best describes the descendants of those plants with the double chromosome number?

#Section 1: Ecology
  1. The plant with the double chromosome number would be genetically defective and have no descendants. 
  2. The descendants would be at a selective advantage because of the increased ability to introgress.
  3. The descendants would be reproductively successful because they could backcross with the parental species.
  4. The descendants would regain the ability to reproduce sexually because chromosomes could pair normally.
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TLS Online TPP Program

#Question id: 16890

#Section 3: Mathematics and Quantitative Ecology

A test of H0: μ = 0 versus Ha: μ > 0 is conducted on the same population independently by two different researchers. They both use the same sample size and the same value of α = 0.05. Which of the following will be the same for both researchers?
TLS Online TPP Program

#Question id: 16891

#Section 3: Mathematics and Quantitative Ecology

Which of the following is not a correct way to state a null hypothesis?
TLS Online TPP Program

#Question id: 16892

#Section 3: Mathematics and Quantitative Ecology

A test to screen for a serious but curable disease is similar to hypothesis testing, with a null hypothesis of no disease, and an alternative hypothesis of disease. If the null hypothesis is rejected treatment will be given. Otherwise, it will not. Assuming the treatment does not have serious side effects, in this scenario it is better to increase the probability of:
TLS Online TPP Program

#Question id: 16893

#Section 3: Mathematics and Quantitative Ecology

A random sample of 25 college males was obtained and each was asked to report their actual height and what they wished as their ideal height. A 95% confidence interval for μd = average difference between their ideal and actual heights was 0.8" to 2.2". Based on this interval, which one of the null hypotheses below (versus a two-sided alternative) can be rejected?
TLS Online TPP Program

#Question id: 16894

#Section 3: Mathematics and Quantitative Ecology

The average time in years to get an undergraduate degree in computer science was compared for men and women. Random samples of 100 male computer science majors and 100 female computer science majors were taken. Choose the appropriate parameter(s) for this situation.
TLS Online TPP Program

#Question id: 16895

#Section 3: Mathematics and Quantitative Ecology

If the word significant is used to describe a result in a news article reporting on a study,