Greta had 142 brood cows. She lost 3 cows and calves during calving and 5 calves died later. She had 4 cows that did not calve.
a. What percent of the cows did she lose? Express your answer to the nearest tenth of a percent?
b. How many calves does she have?
c. What percent of her remaining cows have calves. Express your answer to the nearest percent?
a. 2.1%
b. 130 calves
c. 94%
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Which of the following was NOT among the common forms of corruption practiced by the wealthy railroad barons?
A. bribing judges and state legislatures B. forcing their employees to buy railroad company stock C. providing free railroad passes to journalists and politicians D. watering railroad stocks and bonds in order to sell them at inflated prices E. receiving kickbacks from powerful shippers
A sample of 87 glass sheets has a mean thickness of 4.20 mm with a standard deviation of 0.10 mm.
a. Find a 98% confidence interval for the population mean thickness. b. What is the level of the confidence interval (4.185, 4.215)? c. How many glass sheets must be sampled so that a 98% confidence interval will specify the mean to within ±0.015?
The 208 V from L2 to N for a high-leg delta transformer is usable for compressor loads that require 208 V
Indicate whether the statement is true or false
Gross Vehicle Weight Rating (GVWR) means the following:
a. Maximum GVW specified by the manufacturer. b. The value specified by the manufacturer as the loaded weight of a single vehicle. c. Maximum GVW specified by the manufacturer for a single vehicle.