Mathematics, 27.07.2021 21:20 emilee30
Using traditional methods it takes 92 hours to receive an advanced flying license. A new training technique using Computer Aided Instruction (CAI) has been proposed. A researcher used the technique on 70 students and observed that they had a mean of 93 hours. Assume the population variance is known to be 36. Is there evidence at the 0.05 level that the technique lengthens the training time? Find the value of the test statistic. Round your answer to two decimal places.
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Mathematics, 21.06.2019 16:50
The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left
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Mathematics, 21.06.2019 18:30
How do you solving the solution of each system using elimination?
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Mathematics, 21.06.2019 21:30
In a test for esp (extrasensory perception), a subject is told that cards only the experimenter can see contain either a star, a circle, a wave, or a square. as the experimenter looks at each of 20 cards in turn, the subject names the shape on the card. a subject who is just guessing has probability 0.25 of guessing correctly on each card. a. the count of correct guesses in 20 cards has a binomial distribution. what are n and p? b. what is the mean number of correct guesses in 20 cards for subjects who are just guessing? c. what is the probability of exactly 5 correct guesses in 20 cards if a subject is just guessing?
Answers: 1
Mathematics, 22.06.2019 00:00
The average length of a king cobra is 3.7 m. the record length is 1.88 m longer than the average. how long is the record holder?
Answers: 1
Using traditional methods it takes 92 hours to receive an advanced flying license. A new training te...
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