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Ahat [919]
3 years ago
10

Explain how critical value variations influence statistical power.

Biology
2 answers:
zloy xaker [14]3 years ago
8 0
Statistical power is the likelihood that a test (statistical test) will detect an effect when there is an effect there to be detected. Statistical power<span> is inversely related to </span><span>the probability of making a </span>Type II error (Type II errors<span>, or </span>false negatives, occur when you don’t see things that are there) = beta<span>.
statistical power = 1 – </span>β. The critical value<span> is the </span>value corresponding to a given significance level.  The statistical power<span> is </span>influenced by the choice of significance level for the test (by the critical value). Larger critical value means increased power of the test: <span> the chance of obtaining a statistically significant result is increased (reduces the risk of a </span>Type II error<span> (false negative regarding whether an effect exists) is reduced) . </span>
NNADVOKAT [17]3 years ago
6 0

If a researcher establishes the critical values of a study to be more conservative, the more power the researcher has in finding significant support for a hypothesis. In the same sense, the less conservative the established critical values are, the less power a researcher has in finding significant support for a hypothesis.

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Answer:

Explanation:

One major characteristic used to identify bacterial species is by Gram staining. This makes bacteria to be classified into two broad classes; Gram positive bacteria (appear purple after stain) and Gram negative bacteria (appear pink after stain).

Another characteristic used is the presence or absence of capsule.

Other characteristics include there motility (which can be due to the presence of flagella), bonding tendency (which can be individually or in pairs) and also pathogenic bacteria can be classified as intracellular or extracellular bacteria.

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A pea plant with round seeds (RR) is crossbred with another pea plant with wrinkled seeds (rr). What is the probability of produ
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Answer: The probability of producing offspring with genotype Rr is 100%.

Explanation-

Round seed is a dominant trait ( depicted by dominant R allele) whereas wrinkled seed is a recessive trait ( depicted by recessive allele r).

According to the law of segregation of genes, the alleles will separate from one another during gamete formation.

Pea plant with round seeds will produce two gametes that is R and R whereas plant with wrinkled seeds will produce r and r gametes.

When the parents are crossed, they will result in the offspring with genotype Rr ( that will exhibit round seed phenotype).

Refer punnett square.


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As shown in the reaction, a mole of glucose reacts with 6 moles of oxygen.

To calculate the molecular mass:

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150 x 192/180 = 160g of oxygen.

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To learn more about glucose here

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