Apr 22, 12:02:48 AM
An element with a mass of 120 grams decays by 27.5% per minute. To the nearest
tenth of a minute, how long will it be until there are 2 grams of the element
remaining?

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attempt 2 out of 2

Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.

2. explain in words how you plot the point (4, −2) in a rectangular coordinate system.

Consider a= {x|x is alive} f={x|x is in france} m={x|x is a national monument} w{x|x is a woman}. which statements are true regarding elements of the given sets? check all that apply.