Mathematics, 04.12.2019 14:31, ddvinks6825
Astudy was conducted to determine if a certain treatment has any effect on the amount of metal removed in a pickling operation. a random sample of 100 pieces was immersed in a bath for 24 hours without the treatment, yielding an average of 12.2 millimeters of metal removed and a sample standard deviation of 1.1 millimeters. a second sample of 200 pieces was exposed to the treatment, followed by the 24-hour immersion in the bath, resulting in an average removal of 9.1 millimeters of metal with a sample standard deviation of 0.9 millimeter. compute a 98% confidence interval estimate for the difference between the population means. does the treatment appear to reduce the mean amount of metal removed?
Answers: 3
Mathematics, 21.06.2019 22:00, shantejahtierr63961
You're locked out of your house. the only open window is on the second floor, 25 feet above the ground. there are bushes along the edge of the house, so you will need to place the ladder 10 feet from the house. what length ladder do you need to reach the window?
Answers: 3
Mathematics, 21.06.2019 23:30, adriandehoyos1p3hpwc
Write the percent as a fraction or mixed number in simplest form. 0.8%
Answers: 2
Astudy was conducted to determine if a certain treatment has any effect on the amount of metal remov...
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