Mathematics, 17.12.2020 20:50 deezzzy
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 l, nine times out of ten, seniors will have an average score within 3% of 69%. Is the confidence at 90%, 95%, or 99%? What is the margin error? Calculate the confidence interval and explain whit it means in terms of the situation.
Answers: 3
Mathematics, 21.06.2019 14:00
In factoring by grouping, what would you have for step 3 for the following? step 1: x^3 +5x^2 +4x+20 step 2: x^2 (x+5)+4(x+5) step 3: ?
Answers: 2
Mathematics, 21.06.2019 14:30
"you know, playing tennis is healthier than watching a tennis match on television," katya remarked to her couch potato brother. in this sentence, healthier is a/an a. superlative. b. comparative. c. positive form. d. adverb.
Answers: 2
Mathematics, 21.06.2019 14:50
Which expression is equivalent to 4 square root 6 divided by 3 root 2
Answers: 1
A field test for a new exam was given to randomly selected seniors. The exams were graded, and the s...
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