Mathematics, 19.01.2021 21:30 peytondavis2424
The amount of time the university professors devote
to their jobs per week is normally distributed with a
mean of 52 hours and a standard deviation of 6 hours.
a. What is the probability that a professor works for
more than 60 hours per week?
b. Find the probability that the mean amount of
work per week for three randomly selected professors is more than 60 hours.
c. Find the probability that if three professors are
randomly selected all three work for more than
60 hours per week
Answers: 3
Mathematics, 21.06.2019 16:30
The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?
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Mathematics, 21.06.2019 20:30
3.17 scores on stats final. below are final exam scores of 20 introductory statistics students. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 57, 66, 69, 71, 72, 73, 74, 77, 78, 78, 79, 79, 81, 81, 82, 83, 83, 88, 89, 94 (a) the mean score is 77.7 points. with a standard deviation of 8.44 points. use this information to determine if the scores approximately follow the 68-95-99.7% rule. (b) do these data appear to follow a normal distribution? explain your reasoning using the graphs provided below.
Answers: 1
Mathematics, 22.06.2019 02:30
Fred and gene are hang gliding. fred is 700 feet above the ground and descending at 15 ft/s. gene is decending as shown in the table. interpret the rates of change and initial values of the linear functions in terms of the situations they model. show all work. freds equation is f(x)=-15x+700. ( genes is the table attached)
Answers: 1
Mathematics, 22.06.2019 03:30
Of the 50 us states 4 have names that start with the letter w
Answers: 2
The amount of time the university professors devote
to their jobs per week is normally distributed...
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