Mathematics, 27.11.2019 20:31 swelch2010
Use the following information for the next four questions. a city health department wishes to determine whether the mean bacteria count per unit volume of water at a lake beach is within the safety level of 200. a researcher collected ten water samples of unit volume and found the bacteria counts to be: 175, 190, 207, 193, 184, 204, 205, 193, 196, 180the sample mean of the observations is 192.7 and the sample standard deviation is 10.81. the bacteria counts are normally distributed. we want to test the null hypothesis that the mean bacterial count ( µ ) is 200 against the hypothesis that it is less than 200 (where there is no cause for concern).
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Mathematics, 21.06.2019 13:40
Although changes result from business transactions, the equality of the fundamental bookkeeping equation must remain. t/f
Answers: 2
Mathematics, 21.06.2019 21:30
Madeline takes her family on a boat ride. going through york canal, she drives 6 miles in 10 minutes. later on as she crosses stover lake, she drives 30 minutes at the same average speed. which statement about the distances is true?
Answers: 3
Mathematics, 21.06.2019 21:40
Which statement is true about a number and its additive inverse? a. their product is always one. b. their sum is always one. c. they are always reciprocals of each other. d. their sum is always zero.
Answers: 1
Mathematics, 21.06.2019 23:20
The cost of turkey is directly proportional to its weight. if a 12-pount turkey costs $27, how much does a 13-pound turkey cost? a. $33.75 b. $36.00 c. $31.00 d. $32.50
Answers: 1
Use the following information for the next four questions. a city health department wishes to determ...
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