The university of fountain lakes has just placed an advertisement in various school magazines, looking to recruit new students. at one stage in the ad, the following claim is made: "a whopping 85% of our graduate students go on to achieve proessional employment within 6 months of graduation! "there is a footnote at the bottom of the ad which qualifies this boast: "note: a 95% confidence interval was constructed and we found that the proportion of students going on to professional employment within 6 months of graduation is within 0.01 of 0.85".four students see this adverstisement, including the footnote, and interpret the ad in different ways. alex: "they are 95% confident that 85% of students will go on to achieve professional employment within 6 months."barbara: "they know that 85% of students will go on to achieve professional employment within 6 months."chris: "they know that somewhere between 84% and 86% of students will go on to achieve professional employment within 6 months."donna: "they are 95% confident that somewhere between 84% and 86% of students will go on to achieve professional employment within 6 months."the student that has the most correct interpretation is: select one: a. barbarab. alexc. chrisd. donna

85.560%

step-by-step explanation:

conditional probability is defined as:

p(a|b) = p(a∩b) / p(b)

in other words, the probability that a occurs, given that b has occurred = the probability that both a and b occur / the probability that b occurs.

in this example:

p(turns 64 | turns 44) = p(turns 64 & turns 44) / p(turns 44).

if someone turns 64, they must have already turned 44, so:

p(turns 64 | turns 44) = p(turns 64) / p(turns 44)

on page 42, we see that of the original 100,000, 94944 turn 44, and 81234 turn 64.   therefore:

p(turns 64 | turns 44) = 81234 / 94944

p(turns 64 | turns 44) = 0.85560

answer: (-6,3)

step-by-step explanation:

the correct option is:

b. a value of the variable that makes the polynomial equal to zero.

the root or roots of a polynomial are the values of the variable that makes the polynomial equal to 0. we can find the roots of a polynomial making the expression equal to 0 and then, isolating the variable (it it has just one variable).

for example, given the following polynomial:

the root or zero of the polynomial, can be found by making the expression equal to 0, and then, isolating the variable, so, finding the root we have:

therefore, we have that the root of the polynomial is equal to 2.

we must remember that the number of roots that a polynomial can have, will depend on the degree of the polynomial, a first degree polynomial have will have one single root, a second degree polynomial (quadratic expression) may have two roots and so.

hence the correct option is:

b. a value of the variable that makes the polynomial equal to zero.

have a nice day!