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Which of the following scenarios is most appropriate for using a paired t-test instead of an unpaired t-test?

We measure the change in blood pressure of some hypertension patients after taking a new medicine. We conduct a hypothesis test with null hypothesis that the medicine cannot reduce blood pressure. We get the p-value from the test. Which statement is true?

A genetic locus has two alleles M and N. Suppose the relative frequency of allele M in some population is 0.7. Assuming Hardy-Weinberg equilibrium, for an individual randomly sampled from this population, the probability of genotype MN is equal to ____.

Consider the in-built iris data frame which you can load using data(iris). Consider the null hypothesis: the mean Sepal.Width of virginica flowers is equal to the mean Sepal.Width of versicolor flowers. Perform a two-sided unpaired t-test and report the p-value.

Consider the previous question Q15. Which statement below is correct?

Use the following code to load the data frame DNase. data(DNase) Which variable is coded as a factor?

Consider the DNase data frame again. Find the correlation between conc and density.

During a neurological assessment of a stroke patient, which findings correspond to correct cranial nerve function? Select all that apply:

A 70-kg patient in status epilepticus requires midazolam 0.1 mg/kg IV. The medication is supplied as 5 mg/mL. What are the correct calculations and actions? Select all that apply:

You are called to treat a diabetic patient with warm, dry skin, hypotension, tachycardia, and normalrespirations who is responsive only to painful stimulation. The patient takes an oral hypoglycemic medication.Which of the following would BEST apply to this situation?