Mathematics, 29.01.2020 01:00, softballgirl3589
Asmall shop sells a variety of smartphones. suppose we know that the battery life of smartphone a is normally distributed with a mean of 15 hours and a standard deviation of 6.4. also suppose we know that the average battery life of smartphone b is 12 hours with a standard deviation of 4.2. we know that smartphone c has the greatest standard deviation of battery life of 7.5. twelve hundred of the four thousand customers of the shop use smartphone a. seven hundred fifty of the customers use smartphone b. 1.1. if we choose 16 smartphone a users, what is the probability that their mean battery life will be between 14.5 and 17 hours?
Answers: 1
Mathematics, 21.06.2019 22:00, wEKLJHFKLJEBFR2460
Luke started a weight-loss program. the first week, he lost x pounds. the second week, he lost pounds less than times the pounds he lost the first week. the third week, he lost 1 pound more than of the pounds he lost the first week. liam started a weight-loss program when luke did. the first week, he lost 1 pound less than times the pounds luke lost the first week. the second week, he lost 4 pounds less than times the pounds luke lost the first week. the third week, he lost pound more than times the pounds luke lost the first week.
Answers: 2
Mathematics, 22.06.2019 04:00, firepropr85
The associative, commutative, and distributive properties can be used on rational equations. true or false
Answers: 1
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