Mathematics, 07.04.2020 18:28 shyshy6184
An article in American Demographics claims that more than twice as many shoppers are out shopping on the weekends than during the week. Not only that, such shoppers also spend more money on their purchases on Saturdays and Sundays! Suppose that the amount of money spent at shopping centers between 4 P. M. and 6 P. M. on Sundays has a normal distribution with mean $88 and with a standard deviation of $20. A shopper is randomly selected on a Sunday between 4 P. M. and 6 P. M.and asked about his spending patterns.
(a) What is the probability that he has spent more than $94 at the mall? (Round your answer to four decimal places.)
(b) What is the probability that he has spent between $94 and $109 at the mall? (Round your answer to four decimal places.)
(c) If two shoppers are randomly selected, what is the probability that both shoppers have spent more than $109 at the mall? (Round your answer to four decimal places.)
Answers: 2
Mathematics, 21.06.2019 23:30, pradojosselinep34b1k
Find the directions in which the function increases and decreases most rapidly at upper p 0p0. then find the derivatives of the function in these directions. f(x, y)equals=x squared plus xy plus y squaredx2+xy+y2, upper p 0p0left parenthesis 1 comma negative 4 right parenthesis
Answers: 2
Mathematics, 21.06.2019 23:50, Angel4345
Astudent draws two parabolas both parabolas cross the x axis at (-4,0) and (6,0) the y intercept of the first parabolas is (0,-12). the y intercept of the second parabola is (0,-24) what is the positive difference between the a values for the two functions that describe the parabolas
Answers: 3
Mathematics, 22.06.2019 00:30, dragpack70
Will mark ! (10 points also! ) if x varies inversely with y and x =6 when y= 10, find y when x=8 a. y=4.8 b. y=7.5 c. y=40/3 d. y=4/15
Answers: 1
An article in American Demographics claims that more than twice as many shoppers are out shopping on...
Mathematics, 30.08.2021 03:10
Mathematics, 30.08.2021 03:10
Biology, 30.08.2021 03:10
Geography, 30.08.2021 03:10