Business, 16.04.2020 01:06 stjuliendeja
CHEGG. The U. S. National Toxicology Program (NTP) studied the toxicity and carcinogenicity of agents potentially causing a risk to human health. Electromagnetic fields around electrical installations are harmless in theory, but they might have a long‑term effect on health (for instance, in triggering tumors). Observational studies in human populations have suggested a potential association. An NTP study looked at the occurrence of cancers in otherwise healthy rats after two years of daily exposure to 60 ‑hertz electromagnetic fields of various intensities. The numbers of male and female rats with a tumor after the two‑year study period is displayed. Note that 2 Gauss is approximately 1000 ‑fold greater than what is considered high exposure for humans. Male rats Female rats
Control: no exposure 16 ( n=99 ) 19 ( n=100 )
0.02-gauss exposure 31 (n = 100) 22 (n = 100)
2-gauss exposure 30 (n = 100) 22 (n = 100)
In rats not exposed to an electromagnetic field (sample size in parentheses), is there significant evidence of a difference in the tumor rates between males and females?
Answers: 1
Business, 22.06.2019 23:10, hannah2757
Until recently, hamburgers at the city sports arena cost $4.70 each. the food concessionaire sold an average of 13 comma 000 hamburgers on game night. when the price was raised to $5.40, hamburger sales dropped off to an average of 6 comma 000 per night. (a) assuming a linear demand curve, find the price of a hamburger that will maximize the nightly hamburger revenue. (b) if the concessionaire had fixed costs of $1 comma 500 per night and the variable cost is $0.60 per hamburger, find the price of a hamburger that will maximize the nightly hamburger profit.
Answers: 1
Business, 23.06.2019 12:30, mya1318
Match each type of insurance with an example of when the insurance company would make a payment. a.liability coverageyou cause an accident that damages someone else's car. b.disability insuranceyou go to the emergency room after a car accident. c.renter's insuranceyour stereo and computer are stolen from your apartment. d.health insuranceyou have to take a month off from work because of a broken leg.
Answers: 3
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