Mathematics, 11.05.2021 01:00 dixks
To survey clients at a massage-therapy spa, a researcher alphabetically lists all of the customers the spa had last month. The researcher sends a survey to the 13th person on the list (with the number 13 being randomly chosen), then surveys every 20th customer after that. Which sampling method was used?
cluster sampling
simple random sampling
stratified random sampling
systematic random sampling
Answers: 2
Mathematics, 21.06.2019 18:40, helpme6191
(mc 02.03) what set of reflections and rotations would carry rectangle abcd onto itself? reflect over the y-axis, reflect over the x-axis, rotate 180° rotate 180°, reflect over the x-axis, reflect over the line y=x reflect over the x-axis, rotate 180°, reflect over the x-axis rotate 180, reflect over the y-axis, reflect over the line y=x
Answers: 1
Mathematics, 21.06.2019 22:40, raymond5799
Find the missing factor. write your answer inexponential form.9^2=9^4×
Answers: 1
Mathematics, 22.06.2019 00:30, danielzgame
Examine this system of equations. what integer should the second equation be multiplied by so that when the two equations are added together, the x term is eliminated? 3/4x+1/7y=6 1/8x-3/5y=16
Answers: 3
Mathematics, 22.06.2019 00:50, emmaraeschool
Astudent is determining the influence of different types of food on the growth rate of spiders. she feeds one group of spiders two caterpillars twice a week. the other group received similarly-sized beetles twice a week. she records the amount of time required for individuals to reach sexual maturity. her hypothesis is that the spiders feeding on caterpillars will have a faster growth rate because caterpillars have a higher protein content compared to beetles. in this experiment, what is the dependent variable? spiders assigned to different feeding groups. time required to reach sexual maturity number of prey items fed twice a week. growth rates of each group.
Answers: 2
To survey clients at a massage-therapy spa, a researcher alphabetically lists all of the customers t...
Social Studies, 15.07.2019 07:00
History, 15.07.2019 07:00
Mathematics, 15.07.2019 07:00
History, 15.07.2019 07:00