Mathematics, 06.08.2019 16:20, adamgala3885
Group lending and household saving a non-governmental organization (ngo) is investigating whether the average annual amount saved by households that participate in a group lending program (x population) is higher than the average annual amount saved by households that are not participating (y population). in a random sample of 36 households that participate in a group lending program, the mean amount saved was $200, and the standard deviation of amounts saved was $40. in an independent random sample of 26 households that are not participating, the mean amount saved was $180, and the standard deviation of amounts saved was $45. test the null hypothesis that the population mean amount saved by households participating in a group lending program is no larger than the population mean amount saved by households that are not participating, against the alternative hypothesis that it is larger. use a 5% level of significance. assume that the distribution of amounts saved is approximately normal in each population (households participating in a group lending program, and households not participating), and that the distributions have a common but unknown variance. this is the first of 7 multiple choice questions for this problem. what are the correct null and alternative hypotheses?
Answers: 2
Mathematics, 21.06.2019 15:00, gabbyypadron
What are the relative frequencies to the nearest hundredth of the columns of the two-way table? a b group 1 102 34 group 2 18 14
Answers: 1
Mathematics, 21.06.2019 20:00, Ap621765
In one day there are too high tides into low tides and equally spaced intervals the high tide is observed to be 6 feet above the average sea level after six hours passed a low tide occurs at 6 feet below the average sea level in this task you will model this occurrence using a trigonometric function by using x as a measurement of time assume the first high tide occurs at x=0. a. what are the independent and dependent variables? b. determine these key features of the function that models the tide: 1.amplitude 2.period 3.frequency 4.midline 5.vertical shift 6.phase shift c. create a trigonometric function that models the ocean tide for a period of 12 hours. d. what is the height of the tide after 93 hours?
Answers: 1
Group lending and household saving a non-governmental organization (ngo) is investigating whether th...
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