a person who organizes and operates a business or businesses, taking on greater than normal financial risks in order to do so.
The correct answer is B. The infection most likely causes bats to wake up during hibernation.
Explanation
According to the fragment of the question, the author said that bats need fat to feed during the hibernation from winter to spring, also they "wake up briefly once or twice a month". On the other hand, the author said "Infected bats seem to run out of fat in the middle of winter", also they "wake up from hibernation every four to five days", and "expend valuable calories flying around" According to the above, the conclusion that can be drawn about the infection is the infection probably causes bats to wake up during hibernation, because only infected bats have an abnormal hibernation cycle, also, this might be associated to the low rate of fats that are found in infected bats.
Answer:
cross-sectional
Explanation:
Cross-sectional research: In cross-sectional research, the experimenter or the researcher examines a group of people, specific context, and a social phenomenon with the help of a sample. The cross sectional-study or research is also known as transverse study, prevalence study, etc. This is a type of an observational study, that examines a particular population data in a specific time.
Advantage:
1. Cost-effective
2. Easy to gather and assess data.
3. Less time taking.
In the give question, Dr Cross is studying the relationship between age and dependency/independence using cross-sectional research.
Answer:
A) The greater the variance within the population, the larger the sample should be.
Explanation:
The variance of a sample mean is inversely proportional to the sample size, that is, the larger the sample size the smaller the variability of the sample. When sample size increases, the range decreases and hence the variance decreases resulting in a more accurate research result with minimal experimental error.
Hence the researcher should employ a large sample size to reduce the variation in the population.
