Mathematics, 15.04.2021 06:10, ununoctrium4414

The talk-time battery life of a group of cell phones is normally disributed with a mean of 5
hours and a standard deviation of 15 minutes.
a)what percent of the phones have a battery life of at least 4 hours and 45 minutes? b)what percent of the phones have a battery life between 4.5 hours and 5.25 hours? c)what percent of the phones have a battery life less than 5 hours of greater than 5.5 hours?

Answers: 3

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 14:50, tinasidell1972

Need to increase the numbers of customers i talk to daily by 20% how many customers do i need to talk to if i talk to a average of 8 customers per hour during an 8 hour shift

Answers: 2

continue

Mathematics, 21.06.2019 18:30, dallasherncastrillo

Which of the following is the true for f(x) = 5cos

Answers: 2

continue

Mathematics, 21.06.2019 22:00, prelogical

Onnie is considering doing some long term investing with money that she inherited. she would like to have $50,000 at the end of 30 years. approximately how much money would lonnie need to put into an account earning 6% interest compounded annually in order to meet her goal?

Answers: 1

continue

Mathematics, 22.06.2019 02:00, andrewblack033

Write the component forms of vectors u and v, shown in the graph, and find v − 2u. u= (< -3, -2> , < -3, -1> , < -2, -2> , < -2, -1> ) v= (< -5, 1> , -4, 0> , < 0, -4> , < 1, -5> ) v-2u= (< 5, 3> , < 0, 4> , < 4, 0> , < 5, -3>

Answers: 3

continue

Do you know the correct answer?

The talk-time battery life of a group of cell phones is normally disributed with a mean of 5
...