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What is the standard deviation for Group B?  

You have a planar bilayer with equal amounts of saturated and unsaturated phospholipids. After recording the degree of permeability of this membrane to glucose (there was some permeability), you increase the proportion of unsaturated, kinked phospholipids in the bilayer. What will happen to the membrane’s permeability to glucose?

Determine the type of sampling used: A medical researcher interviews every third cancer patient from a list of cancer patients at a local hospital.

Use this information for the next six questions. Cells were treated with ionomycin, a drug that causes cellular stress.  These cells were then tested to see if the stress reduced ATP levels.  Group A received no ionomycin.  Group B received ionomycin.  Group C received vanadate, a drug known to lower ATP levels.  The amount of ATP (mM) obtained from 4 samples per group were as follows:               Group A (mM ATP):              1.4, 1.6, 0.9, 2.0             Group B (mM ATP):              1.1, 0.0, 1.3, 1.5             Group C (mM ATP):              0.1, 0.2, 0.1, 0.3

In your words, what does the mode of a data represent? Give me a practical example/use when one would use the mode to describe a data set.

Phospholipid bilayer membranes are selectively permeable. What is meant by the phrase “selectively permeable”?

Use this information for the next three questions. A hospital patient suffering from a chronic internal infection caused by a bacterium was treated with daily injections of the antibiotic streptomycin over a period of 12 days. The following graph shows the results. Graph Representing Antibiotic Treatment Results for Chronic Internal Infections Image Description A graph of the results of antibiotic treatment for a chronic internal infection over a 12-day period. Days Bacteria Per mL Urine ×1007 Antibiotic Resistance 1 8 100000 2 7 100000 3 1 100000 4 >.5 100000 5 >.5 400000 6 .5 425000 7 1 500000 8 1.5 475000 9 1.75 500000 10 2 550000 11 2 525000 12 3 550000 (Antibiotic resistance = minimum inhibitory concentration of streptomycin in μg/ml) Which of the following statements correctly describes these experimental data, or a conclusion that can be properly drawn from them?

During bag-mask ventilation, how should you hold the mask to make an effective seal between the child’s face and the mask?

What is standard deviation? Why is it important in statistics? Why would someone use standard deviation to describe a data set?

I want to collect data on everyone’s favorite model of cars. Which measure of central tendency can be used?