Mathematics, 16.12.2019 10:31 Fireburntbudder
Aclinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. before treatment, 13 subjects had a mean wake time of 102.0 min. after treatment, the 13 subjects had a mean wake time of 79.4 min and a standard deviation of 21.2 min. assume that the 13 sample values appear to be from a normally distributed population and construct a 90% confidence interval estimate of the mean wake time for a population with drug treatments. what does the result suggest about the mean wake time of 102.0 min before the treatment? does the drug appear to be effective?
Answers: 2
Mathematics, 21.06.2019 16:00
5× 1/2 = ? a) more than 5 because you are multiplying by a whole number b) 5/10 because you multiply the numerator and denominator by 5 c) less than 5 because you are multiplying by a number that is more than 1 d) less than 5 because you are multiplying by a number that is less than 1
Answers: 3
Mathematics, 21.06.2019 19:00
Quick! a survey of 57 customers was taken at a bookstore regarding the types of books purchased. the survey found that 33 customers purchased mysteries, 25 purchased science fiction, 18 purchased romance novels, 12 purchased mysteries and science fiction, 9 purchased mysteries and romance novels, 6 purchased science fiction and romance novels, and 2 purchased all three types of books. a) how many of the customers surveyed purchased only mysteries? b) how many purchased mysteries and science fiction, but not romance novels? c) how many purchased mysteries or science fiction? d) how many purchased mysteries or science fiction, but not romance novels? e) how many purchased exactly two types of books?
Answers: 3
Mathematics, 21.06.2019 20:00
Given: ∆mop p∆mop =12+4 3 m∠p = 90°, m∠m = 60° find: mp, mo
Answers: 1
Aclinical trial was conducted to test the effectiveness of a drug for treating insomnia in older sub...
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