Mathematics, 10.02.2021 19:40, damilysgonzalez2

Mrs. Meany routinely gives quizzes containing 70 multiple choice questions with four possible answers (1 in 4 chance of guessing correctly). Occasionally the just hands the students an answer sheet without giving them the questions and asks them to guess the correct answers. x = number of correct answers on such an exam Find the mean for this binomial variable x.

Find the standard deviation for this binomial variable x

Answers: 3

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 20:50, RyleyM

The cost of turkey is directly proportional to its weight. if a 12-pount turkey costs $27, how much does a 16-pound turkey cost? a. $33.75 b. $36.00 c. $31.00 d. $32.50

Answers: 3

continue

Mathematics, 21.06.2019 21:00, helen3327

You buy five cds at a sale for $5.95 each. write an expression for the total cost of the cds. then use the distributive property and mental math to evaluate the expression.

Answers: 2

continue

Mathematics, 21.06.2019 23:30, cranfordjacori

Ateam of runners is needed to run a 1 2 -mile relay race. if each runner must run 1 4 mile, how many runners will be needed?

Answers: 3

continue

Mathematics, 22.06.2019 00:00, rebeckas0102

To convert celsius temperatures to fahrenheit, you can use the expression (c + 32). tom says that another way to write this expression is c + 32. what error did tom make?

Answers: 3

continue

Do you know the correct answer?

Mrs. Meany routinely gives quizzes containing 70 multiple choice questions with four possible answer...