Mathematics, 06.08.2019 21:20 Gearyjames8
Polar bears are obligate carnivores, and seals make up a large proportion of their diet. to determine the primary composition of seals in the polar bear diet, a group of researchers assessed a simple random sample of 450 seals killed by polar bears from 1985 to 2011 and determined the species of the seals that were killed. the researchers found that 9 % of the seals killed were bearded seals. the researchers want to construct a 95 % confidence interval for , the proportion of all seals killed by polar bears that were bearded seals. have the requirements for a large-sample -confidence interval been met?
Answers: 3
Mathematics, 21.06.2019 21:30
Consider a bag that contains 220 coins of which 6 are rare indian pennies. for the given pair of events a and b, complete parts (a) and (b) below. a: when one of the 220 coins is randomly selected, it is one of the 6 indian pennies. b: when another one of the 220 coins is randomly selected (with replacement), it is also one of the 6 indian pennies. a. determine whether events a and b are independent or dependent. b. find p(a and b), the probability that events a and b both occur.
Answers: 2
Polar bears are obligate carnivores, and seals make up a large proportion of their diet. to determin...
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