Which of the following is a false property of the standard deviation?

A researcher wants to determine if a new exercise program helps people lose weight. She recruits over 1200 subjects (her statistician determined this number from sample size calculations) and randomly assigns them to either participate in the new exercise program or no exercise program. She tells those in the new program group to exercise 3 times a week and tells those in the no exercise group that they should not exercise for the duration of the study. Based on this information, which of the following principles of experimental design is not presented in this study?

Of the following graphs, which has the SMALLEST standard deviation?  All data was randomly generated with a sample size of n = 50, and all values of all the data are between 0 and 10.  Be aware that the graphs are out of order on your answers!  

Many fire stations handle emergency calls for medical assistance as well as calls requesting firefighting equipment. A particular station says that the probability that an incoming call is for medical assistance is .85. Assuming that successive calls are independent of one another, what is the probability that two successive calls will both be for medical assistance? 

Label each of the four implementation schedules below： A.         B.   C.   D.

A nurse is caring for a client who was exposed to Anthrax.  Which of the following antibiotics should the nurse plan to administer?

The safe dose range for Acetaminophen is 10-15mg/kg/dose every 4-6 hours. The provider orders 240mg PO every 4 hours, PRN for fever. The child weighs 50lbs. Is this order within the safe dose range?

In corn, purple kernels are dominant over yellow kernels and full kernels are dominant over shrunken kernels. A corn plant having purple and full kernels is crossed with a plant having yellow and shrunken kernels, and following progeny are obtained   Phenotypes Number observed Purple, Full 112 Purple, Shrunken 103 Yellow, Full 91 Yellow, Shrunken 94 Total: 400 Based on the chi-square test, can we conclude that the progeny are segregating in the expected ratio and the variation between the expected and observed numbers is due to chance?  

Chromosomes are randomly partitioned during Anaphase I of meiosis, contributing to genetic diversity.

Hair color is determined in Labrador retrievers by alleles at the B and E loci. A dominant allele B encodes black pigment, whereas a recessive allele b encodes brown pigment. Alleles at a second locus affect the deposition of the pigment in the shaft of the hair. Dominant allele E allows dark pigment (black or brown) to be deposited. Recessive allele e prevents the deposition of dark pigment, causing the hair to be yellow. A black female Labrador retriever was mated with a yellow male. Half of the puppies were black, and half were yellow. If the genotype of the black female parent was Bb Ee, then what was the genotype of the other parent?