Mathematics, 11.06.2021 02:50 kprincess16r
A field test for a new exam was given to randomly selected seniors. The exams were
graded, and the sample mean and sample standard deviation were calculated. Based on
the results, the exam creator claims that on the same exam, nine times out of ten, seniors
will have an average score within 3% of 78%.
Is the confidence interval at 90%, 95%, or 99%? What is the margin of error? Calculate
the confidence interval and explain what it means in terms of the situation. (10 points)
Answers: 2
Mathematics, 21.06.2019 14:00
An animal shelter has 21 puppies. if the puppies are 28% of the total dog and cat population , how many dogs and cats are in the animal shelter
Answers: 1
Mathematics, 21.06.2019 19:50
Raj encoded a secret phrase using matrix multiplication. using a = 1, b = 2, c = 3, and so on, he multiplied the clear text code for each letter by the matrix to get a matrix that represents the encoded text. the matrix representing the encoded text is . what is the secret phrase? determine the location of spaces after you decode the text. yummy is the corn the tomato is red the corn is yummy red is the tomato
Answers: 2
Mathematics, 22.06.2019 01:00
Atriangle has side lengths of x, x+11, and 3x+5. what is the perimeter?
Answers: 1
A field test for a new exam was given to randomly selected seniors. The exams were
graded, and the...
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