Internet sites often vanish or move so that references to them cannot be followed. in fact, 13% of internet sites referenced in major scientific journals are lost within two years after publication. if a paper contains nine internet references, what is the probability that all nine are still good two years later? round your answer to three decimal places. what specific assumption must be made in order to calculate the probability? the paper containing the references must be obtained by random sampling. the occurrence of the site references in the paper are independent events. the occurrence of the site references in the paper are disjoint events, one does not need to make any assumptions; this is just a straightforward calculation. p(all nine are still good)=

The probability that all nine references are still good two years later is P(all nine are still good)=0.29.

The assumption we have to make is that the occurrence of the site references in the paper are independent events.

Step-by-step explanation:

The assumptions we have to make about the papers is that their probabilities of survival are independent of each other. This is the same as saying: The occurrence of the site references in the paper are independent events.

The probabilities of survival of any reference is:

The probability of the nine references are still good later can be calculated as:

The probability that all nine references are still good two years later is P=0.29.

$20.01

step-by-step explanation:

the sale price is (1.00 - 0.77)($87), or 0.23($87), or $20.01.

stew reads at the fastest rate of 265 words per minute.

step-by-step explanation:

it's a given that felicia reads at 260 word per minute and on connie's graph we can see that she reads 200 words per minute. since stew's table tells us that he read 795 in 3 minutes, we can divide 795 by 3 to find out how many words he reads per minute.

795/3 = 265

stew reads 265 words per minute - he reads at the fastest rate since felecia reads at 260 words per minute and connie reads at 200 words per minute.

stew (265) > felecia (260) > connie (200)