A sample of 50 people was randomly chosen, and 60% of
them said that they would rather eat breakfast at home
than at a restaurant.
If the confidence level and the point estimate remain the
same but the sample size is increased to 100 people,
which statement is true?
E=z/P(1 - Ô)
The new survey's margin of error will be 50% the size of
the original survey's margin of error.
The new survey's margin of error will be between 50%
and 100% the size of the original survey's margin of
error.
The new survey's margin of error will be 200% the
original survey's margin of error.
The new survey's margin of error will be between 100%
and 200% the size of the original survey's margin of
error.

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !

Aquadratic equation in standard from is written ax^2= bx+c, where a,b and c are real numbers and a is not zero?

Q.1 dr. frank needs to choose 3 students from her advanced biology course to attend a conference in hawaii. the course has 40 students. which of the following methods could dr. frank use to choose a simple, random sample of 3 students? select all that apply. 1 dr. frank could have the students line up from shortest to tallest, then use her birthdate, 2/5/39, to select 3 students from the line (the 2nd student, the 5th student, and the 39th student). 2. dr. frank could upload her class roster into a spreadsheet and use a ranom-number generating function to produce 3 random numbers. the students whose names are located in the rows with these 3 numbers on the spreadsheet would be chosen. 3. dr. frank could choose the students with the 3 highest grades in the class. 4. dr. frank could count to three, then the first students to come to the front of the classroom and grab a golden ticket from her hand would be selected. 5. dr. frank could ask all students to write their name on a card, place all of the cards in a hat, shake the hat, and then pull 3 cards out from the hat. the students whose names appear on those 3 cards will be selected. 6. dr. frank could ask for volunteers to go to the conference, then choose the first 3 students who raise their hands. q2. now, choose one of the methods that you did not select and explain why this method would not result in a simple, random sample: