A binomial distribution has p = 4/5. How large a sample would be necessary to justify using the normal approximation to the binomial distribution?
A) ?at least 10
B) ?at least 13
C) ?at least 40
D) ?at least 50
D
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Which of these best shows how environmental changes can alter the effects of a gene? a. Many Asian people learn to avoid excess consumption of milk. b. Physical exercise improves mental functioning for many people. c. Brain damage can impair people's ability to recognize faces
d. A special diet can prevent the effects of PKU (phenylketonuria).
The discussion of eating disorders pointed out that
a. the disorders of anorexia nervosa and bulimia nervosa are very different from the concern most women have about their weight. b. so many women are being diagnosed with these disorders that the problem is clearly an epidemic. c. symptoms of disordered eating occur on a continuum; many females have body-image problems, even though they may not be diagnosed with an eating disorder. d. in the current era, men are almost as likely as women to suffer from eating disorders.
The vestibule contains the openings of the urethra and vagina, and the ducts of ____
a. prepuce c. introitus b. labia minora d. Bartholin's glands
Ari experienced a rapid onset of scrotal pain. He should immediately have this pain checked by a health care provider because the condition might well be ____
a. prostate cancer c. testicular torsion b. testicular cancer d. cryptorchidism