Mathematics, 24.05.2021 18:20, blackjack73
The time taken to complete a statistics test by all students is normally distributed with a
mean of 120 minutes and a standard deviation of 12 minutes. Find the probability that the
mean time taken to complete this test by a random sample of 16 students would be between
122 and 125 minutes.
Answers: 3
Mathematics, 21.06.2019 18:00, bvaughn6477
Clara schumann is buying bagels for her coworkers, she buys a dozen bagels priced at $5.49 a dozen. the bakery's cost for making the bagels is $2.25 per dozen. what is the markup rate based on selling price on a dozen bagels?
Answers: 1
Mathematics, 21.06.2019 19:00, priscillaan
Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !
Answers: 1
Mathematics, 21.06.2019 21:30, isamilo520
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
The time taken to complete a statistics test by all students is normally distributed with a
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