Biology, 30.06.2019 19:00 taylorb9893

In which of the following cases should a scientist question the validity of a scientific conclusion? i. if the instruments used in the experiment were miscalibrated ii. if the experiment did not include a control group iii. if the experiment included multiple trials iv. if missing experimental data was estimated rather than measured a. i, ii, and iv only b. i and iii only c. i, ii, iii, and iv d. i, ii, and iii only

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Answer from: PinkDivaGirl02

I think A is the best option

Answer from: boomerjm

I.if the instruments used in the experiment were miscalibrated.

II.if the experiment did not include a control group

IV.if missing experimental data was estimated rather than measured.

Explanation:

There are many reasons which can bring errors and mistakes in the data obtain after the experimental procedure which can yield conclusions which cannot be considered as valid.

The following are the examples of the cases which can bring incorrectness in the conclusion. For them the validity is required to be tested.

I.if the instruments used in the experiment were miscalibrated.: The instruments used in the experiment are miscaliberated they can yield inappropriate data hence, the conclusion will become incorrect and invalid.

II.if the experiment did not include a control group. : The control group is used to compare the variation and changes in the experimental group. If it is not used the experiment will be considered as invalid and the conclusion will also be invalid.

IV.if missing experimental data was estimated rather than measured. : The estimation can make the data manipulative rather then qualitative or quantitative. This will yield conclusion which will generated after manipulative efforts thus also questions on the validity of the results.

Answer from: Quest

gametes or germ cells are haploid cells (example: sperm and ova) containing only one set (or n) number of chromosomes and autosomal or somatic cells are diploid cells containing 2n number of chromosomes.

Answer from: Quest

which

what is a measurement of the earth’s history divided into time periods?

> fossil record <

sedimentary rock

> geologic time scale <

radioactive elements

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