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What scientific discovery made by chance as opposed to the scientific method?
Penicillin was discovered by chance in 1928 by Alexander Fleming when he noticed that a mold called Penicillium notatum killed bacteria in a culture plate. This accidental discovery led to the development of the first antibiotic and revolutionized medicine.
Would a die mark on a New Hampshire State Quarter increase its collectible value?
Yes, a die mark or error on a New Hampshire State Quarter could potentially increase its collectible value among certain collectors who are interested in such variations. Die marks and errors are considered unique and rare by some numismatists, making them more desirable for collectors. It ultimately depends on the condition and rarity of the specific die mark on the coin.
What causes genetic drift?
Genetic drift is caused by random sampling errors in a population's gene pool. These errors can occur during processes like genetic recombination, migration, or founder events, leading to changes in allele frequencies over generations. The smaller the population, the greater the impact of genetic drift.
List and explain major sources of error in the investigation of a Yeast Respiration lab.?
oxgen conc will decrease and ethanol will eventually be produced . if temperature is increased more yeast may divide and hence respiration of yeast will increase but in this case not due to temp.
What are the classifications of program bugs?
Some common types of program bugs are: Arithmetic bugs Logic bugs Syntax bugs Resource bugs Multi-threading programming bugs Interfacing bugs Performance bugs Teamworking bugs
What are the benefits of computer-generated documents in the medical office?
They can help increase accuracy and efficiency and decrease time wasted and errors.
A way to reduce both type 1 and type 2 errors is to decrease sample size is this statement true?
False, Increase the sample size.
What if you increase virtual memory more than 2.5 times your physical RAM although your drive can fit the space required?
I think it is best to let windows automatically determine virtual memory. Less chance of errors that way.
Compensating and biased errors in statistics?
These errors occur due to chance. These errors tend to cancel to each other in long run. These errors are random. They are not the results of any prejudice or bais.
What factor can researcher control that will reduce the risk of a type 1 error?
In statistical tests there are 2 main types of Errors, Type I and Type II. Type 1 errors occur when you reject a null hypothesis that is actually true and is thus refereed to as a false positive. Type II errors are essentially the opposite, accepting a null hypothesis that is false, and is often called a false negative. You can reduce the risk of a type I error by lowering the value of P that you're significance test must return to reject the null, but doing so will increase the chance of a type II error. The only way to reduce both is to increase the entire sample size. Alternatively, in some cases, it may also be possible to lower the standard deviation of the experiment, which would also decrease the risk of type I and type II errors.
How will an income tax worksheet benefit your construction business?
Having an income tax worksheet can benefit your construction business in multiple ways. It can increase the amount of deductions that may be available to you. It can also decrease errors, and cause less stress during tax time.
Why is it important to align the decimal points when adding?
It reduces the chance of making errors.
Last year a baseball player made 63 errors This year he made 42 What percent decrease was there in the number of errors committed by the baseball player?
56
How do you minimise errors in numerical integration?
Increase the number of segments into which the domain is divided. In particular, increase them where the function has the greatest absolute gradient.
What is it called when scientists run their experiment more than once to reduce the effects of chance errors?
replicate
What reduces the effects of chance errors?
Increasing sample size, using randomization techniques, and conducting statistical analysis can help reduce the effects of chance errors in research studies. These methods can help ensure that the results obtained are more reliable and less influenced by random variability.
What are the two errors that could increase your yield and two errors that could decrease yield?
That entirely depends on what your procedure is. For example, if you are preparing a new substance which is crystallized from solution, the yield could be bigger than expected if the sample is not properly dried or if another substance crystallizes too. It might be less than expected if some is left behind on a filter paper or if some of the starting material is not added to the reaction mixture.
