Assume that scores on a bone mineral density test are normally distributed with a mean of 0 and a standard deviation of 1.a. Find the z-score that separate the lowest 9% of scores from the highest 91%.b. For a randomly selected subject, find the probability of a score greater than -2.93.c. For a randomly selected subject, find the probability of a score between 0.87 and 1.78.

b if for most of the graph

d if y intercept

step-by-step explanation:

110

step-by-step explanation:

based on the question i am guessing that it is a typo for abc

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