Mathematics, 16.12.2019 22:31 cam6877
Six different national brands of chocolate chip cookies were randomly selected at the supermarket. the grams of fat per serving as as follows: 7; 7; 11; 7; 8; 8. assume the underlying distribution is approximately normal. note: if you are using a student's t-distribution, you may assume that the underlying population is normally distributed. (in general, you must first prove that assumption, though.)construct a 90% confidence interval for the population mean grams of fat per serving of chocolate chip cookies sold in supermarkets. i. state the confidence interval. (round you answers to two decimal places.)ii. sketch the graph. iii. calculate the error bound. (round your answer to two decimal places.)
Answers: 2
Mathematics, 21.06.2019 19:50
Prove (a) cosh2(x) − sinh2(x) = 1 and (b) 1 − tanh 2(x) = sech 2(x). solution (a) cosh2(x) − sinh2(x) = ex + e−x 2 2 − 2 = e2x + 2 + e−2x 4 − = 4 = . (b) we start with the identity proved in part (a): cosh2(x) − sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 − sinh2(x) cosh2(x) = 1 or 1 − tanh 2(x) = .
Answers: 3
Mathematics, 21.06.2019 20:30
Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.
Answers: 1
Mathematics, 22.06.2019 01:30
Sara goes on a slingshot ride in an amusement park. she is strapped into a spherical ball that has a radius 3*10^2 of centimeters. what is the volume of air in the spherical ball? use this formula: volume of a sphere=4/3pi,r^3 , where r is the sphere’s radius.
Answers: 1
Mathematics, 22.06.2019 03:30
Which polynomial is in standard form? 3xy+6x®y2 - 4x4y + 19x? y* 18x5 - 7x{y-2xy2 + 1774 x5y5 - 3xy - 11x? y2 +12 15+ 12xy2 - 11x®ys +5x? y2 ?
Answers: 1
Six different national brands of chocolate chip cookies were randomly selected at the supermarket. t...
Chemistry, 19.10.2020 05:01
Mathematics, 19.10.2020 05:01
English, 19.10.2020 05:01
Mathematics, 19.10.2020 05:01
Mathematics, 19.10.2020 05:01
Mathematics, 19.10.2020 05:01
Mathematics, 19.10.2020 05:01
Mathematics, 19.10.2020 05:01
Mathematics, 19.10.2020 05:01
Biology, 19.10.2020 05:01
Computers and Technology, 19.10.2020 05:01
English, 19.10.2020 05:01
Biology, 19.10.2020 05:01