Mathematics, 12.11.2019 22:31, lexybellx3

Aresearcher is planning to construct a one-sample z? confidence interval for a population mean ? . select the statements that would lead to a smaller margin of error, assuming the other factors remain the same.

a) the population standard deviation turns out to be higher than expected.

b) the researcher increases the sample size.

c) the researcher lowers the confidence level.

d) the researcher decreases the sample size.

e) the population standard deviation turns out to be lower than expected.

f) the researcher raises the confidence level.

Answers: 3

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 17:00, nisazaheer

Determine the number of outcomes in the event. decide whether the event is a simple event or not. upper a computer is used to select randomly a number between 1 and 9 comma inclusive. event upper b is selecting a number greater than 4. event upper b has nothing outcome(s). is the event a simple event? (yes or no) because event upper b has (fewer than, exactly, more than) one outcome.

Answers: 1

continue

Mathematics, 21.06.2019 22:30, renaudciera

Use the following statements to write a compound statement for the conjunction or disjunction. then find its truth value. p: an isosceles triangle has two congruent sides. q: a right angle measures 90° r: four points are always coplanar. s: a decagon has 12 sides. a) a right angle measures 90° or an isosceles triangle has two congruent sides; true. b) a right angle measures 90° and an isosceles triangle has two congruent sides; true. c) a right angle measures 90° and an isosceles triangle does not have two congruent sides; false. d) a right angle measures 90° or an isosceles triangle does not have two congruent sides; true.

Answers: 3

continue

Mathematics, 22.06.2019 00:00, queenkimm26

Solve 4 ln x=2ln25 a) x=5 b) x=25 c) x=625

Answers: 1

continue

Mathematics, 22.06.2019 02:00, dondre54

90.0% complete a b c d e confirm last week, your delivery runs took 7 hours 12 minutes on monday, 6 hours 46 minutes on wednesday, and 6 hours 53 minutes on friday. what was your average time for a delivery run?

Answers: 3

continue

Do you know the correct answer?

Aresearcher is planning to construct a one-sample z? confidence interval for a population mean ? . s...