A normal male will have a pair of X chromosomes, and a female will have an X and Y pair.
Answer the following statement true (T) or false (F)
False
Rationale: A normal female will have a pair of X chromosomes; a male will have an X and Y pair.
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____ trips are used to open the circuit breaker contacts by energizing the solenoid from an external source.
A. Shunt B. Fuse C. Interrupt D. Coil
The cost of a fence that can detect poacher intrusion into a National Wildlife Preserve is $3 million per mile. If the effective life of the fence is 10 years, determine the equivalent annual cost of a 10-mile long fence at an interest rate of 8% per year.
What will be an ideal response?
When subjected to an electric current, sodium and chlorine separate and pass through different filters in the ____ process
A) reverse osmosis B) electrodialysis C) ?flash distillation D) vapor compression distillation
Polychlorinated biphenyls (PCBs) are a group of synthetic oil-like chemicals that were at one time widely used as insulation in electrical equipment and were discharged into rivers. They were discovered to be a health hazard and were banned in the 1970s. Since then, much effort has gone into monitoring PCB concentrations in waterways. Assume that water samples are being drawn from a waterway in order to estimate the PCB concentration.
a. Suppose that a random sample of size 80 has a sample mean of 1.69 ppb and a sample standard deviation of 0.25 ppb. Find a 95% confidence interval for the PCB concentration. b. Estimate the sample size needed so that a 95% confidence interval will specify the population mean to within ±0.02 ppb.