Chris will rent a car for a day. The rental company offers two pricing option: option a and option b. for each pricing option, cost (in dollars) depends on miles driven, as shown below. (A) if Chris drives the rental car 75 miles, which option costs more?
Option a or option b
How much more does it cost than the other option?

(B) For what a number of miles driven do the two options cost the same?
If Chris drives less than this amount, which option costs more?
Option a or option b

Data on oxide thickness of semiconductors are as follows: 426 432 418 418 421 436 418 408 431 435 423 426 411 434 435 432 411 426 407 439 422 426 412 416 consider this data as a sample of the population. (a) calculate a point estimate of the mean oxide thickness for all wafers in the population. (round your answer to 3 decimal places.) (b) calculate a point estimate of the standard deviation of oxide thickness for all wafers in the population. (round your answer to 2 decimal places.) (c) calculate the standard error of the point estimate from part (a). (round your answer to 2 decimal places.) (d) calculate a point estimate of the median oxide thickness for all wafers in the population. (express your answer to 1 decimal places.) (e) calculate a point estimate of the proportion of wafers in the population that have oxide thickness greater than 430 angstrom. (round your answer to 4 decimal places.)