Plz a lunch counter sells two types of sandwiches, roast beef and chicken salad. the profit on the sandwiches is $2 for chicken salad and $3 for roast beef. the amount of bread available is enough for 30 sandwiches. there are 2 hours available to prepare sandwiches. if chicken salad sandwiches take 3 minutes to prepare and roast beef sandwiches take 5 minutes, how many of each type of sandwich should be prepared to maximize the profit? assume all sandwiches get sold
a.
15 roast beef
15 chicken
c.
12 roast beef
18 chicken
b.
24 roast beef
6 chicken
d.
10 roast beef
20 chicken

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.)