Mathematics, 08.11.2019 23:31 lovemykay2355
The mean length of a candy bar is supposed to be 43 millimeters. there is concern that the settings of the machine cutting the bars have changed. test the claim at the .02 level that there has been no change in mean length. the alternate hypothesis is that there has been a change. twelve bars (n = 12) were selected at random and their lengths in millimeters are: 42, 39, 42, 45, 43, 40, 39, 41, 40, 42, 43, and 42. the mean length of the sample is 41.5. the sample standard deviation is 1.784. the population standard deviation is not known. if the computed t = −2.913, has there been a statistically significant change in the mean length of the candy bars?
Answers: 3
Mathematics, 21.06.2019 14:40, timothycarter342
You call the pizza store and find out that eachpizza has 12 slices. you expect 16 people tocome, and you estimate each person will eat 3slices. how many pizzas should you order
Answers: 2
Mathematics, 21.06.2019 18:00, emmanuelcampbel
Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning
Answers: 1
The mean length of a candy bar is supposed to be 43 millimeters. there is concern that the settings...
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