3. In which of the following situations is it reasonable to use the Binomial
distribution for the random variable X
1. A multiple-choice exam contains 20 questions with 5
possible answers. An A. P. Statistics student who repeatedly
missed class could only guess an answer to each question
Let X denote the number of questions answered until a
correct answer is chosen.
II. Doctors estimate that the probability of a pregnant women
having identical twins is approximately 0.004. Of the 1355
pregnant women who are maternity patients at a city
hospital over a one-year period, X denotes the number of
women having identical twins.
III. The manufacturers of cell phones have collected failure data
from random samples of size 100 from five different models
of cell phones. The total number of cell phone failures is
recorded
(A) I only
(B) II only
(C) I and II only
(D) II and III only
(E) I, II and III

Generate a research topic/hypothesis, for example some type of old's wives tale or cliche. identify the population of interest. how will you will randomly select in order to get a representative sample? how you will randomly assign the sample into the experimental and control group? what variable(s) will each group receive? identify the independent and dependent variables. explain how you will control for outside/confounding variables. the following is an example: example: topic: does more time spent studying lead to better grades on exams in college students. population of interest: all students enrolled at college random selection: access database with the names of all students and every 5th student will be involved in study. random assignment: every other student gets sent to the experimental group. experimental group: studies for two hours per night 5 days a week. control group: studies for less than 2 hours per night 5 days a week. independent variable: time spent studying dependent variable: exam scores control for: all students study on same nights, have same instructor, take same posttest, study same material, take exam at same time, etc. everything should be the same between the two groups except the amount of time spent !

*giving 20 free points plus brainliest for this drivers ed question * ! which of the following is not the name of a dash gauge? a. speedometer b. gear meter c. odometer d. temperature gauge

2with a manual transmission, the speed of thevehicle determines