The marginal loss on washington reds, a brand of apples from the state of washington, is $35 per case. the marginal profit is $15 per case. during the past year, the mean sales of washington reds in cases was 45,000 cases, and the standard deviation was 4,450. how many cases of washington reds should be brought to market? assume that sales follows a normal distribution.

Iq scores for adults age 20 to 34 years are normally distributed according to n(120, 20). in what range does the middle 68% of people in this group score on the test?

Write the pair of fractions as a pair of fractions with a common denominator

Martha has a deck of cards. she has lost some of the cards, and now the deck only contains nine spades, eleven diamonds, eight clubs, and twelve hearts. martha predicts that whenever she draws a card from the deck without looking, she will draw a club one-fifth of the time. which activity would best allow martha to test her prediction? a. randomly draw a card from the box and see if it is a club. b. randomly draw a card. then, continue to draw another card until all eight clubs are drawn. c. randomly draw and replace a card 120 times. then, observe how close to 30 times a club is drawn. d. randomly draw and replace a card 100 times. then, observe how close to 20 times a club is drawn.