The editor of a textbook publishing company is trying to decide whether to publish a proposed business statistics textbook. information on previous textbooks published indicates that 8% are huge successes, 12% are modest successes, 40% break even, and 40% are losers. however, before a publishing decision is made, the book will be reviewed. in the past, 90% of the huge successes received favorable reviews, 70% of the moderate successes received favorable reviews, and 40% of the break-even books received favorable reviews, and 20% of the losers received favorable reviews.

(a) what proportion of textbooks receive favorable reviews?
(b) if the proposed textbook receives a favorable review, how should the editor revise the
probabilities of the various outcomes to take this information into account?

answer is b

step-by-step explanation:

cant see photo

step-by-step explanation:

third choice down

step-by-step explanation:

the first inequality is based on the number of adults and campers, and the second inequality is based on the cost of feeding both the adult and the camper.

we know that there is room for 525 people max.   it's ok to have less than 525, but it's not ok to have more than 525, so the inequality is less than or equal to.   the number combination of adults (x) and campers (y) cannot exceed this 525 max.   therefore:

x + y ≤ 525

now we talk about cost.   it costs $9 to feed one adult, so depending upon the number of adults you have (x) depends upon how much it will cost to feed that number of adults.   same with the campers, who cost $5 to feed.   the adults can be represented by 9x and the campers can be represented by 5y.   since the budget cannot exceed 1,200, the second inequality is:

9x + 5y ≤ 1200