Mathematics, 15.07.2019 23:20, coltbergstrom
1. the national highway traffic safety administration indicated that 284 people died between 1990 and 2007 as a result of an injury caused by an airbag. newer airbags open at a speed proportional to the speed of an impact. older models open at a constant speed, up to 200 mph, equal to the force of a heavyweight knockout punch. a random sample of 40 older-model airbags was obtained and tested. the average opening speed for each older-model airbag was 173.88. airbag opening speed is normally distributed with =10 mph. compute a 90% confidence interval for the mean opening speed in older-model airbags. be sure to check all necessary assumptions and conditions, and interpret your interval within the context of the problem.
Answers: 3
Mathematics, 21.06.2019 17:00, haydencheramie
The vet charges $45 for an office visit and $10 for each vaccination your dog needs. write an eaquation
Answers: 1
Mathematics, 21.06.2019 18:30, genyjoannerubiera
Isuck at math ; ^; m a student solved this problem and said the answer is 3 feet. chase had a roll of ribbon that contained 7 7/8 feet of ribbon. he cut off one piece that was 3 5/8 feet long and another piece that was 1 1/4 feet from the roll. how much ribbon was left on the roll? is the student's answer reasonable? yes, the answer is reasonable. no, the answer is not reasonable. it should be about 2 feet. no, the answer is not reasonable. it should be about 13 feet. no, the answer is not reasonable. it should be about 4 feet.
Answers: 1
1. the national highway traffic safety administration indicated that 284 people died between 1990 an...
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