Mathematics, 10.11.2020 14:00, dai77
Q1 a)
A company produces paper and it is known that the production follows a normal distribution with a mean of 500 and a standard deviation of 80.What is the probability that x is less than 400?
b) Let x be a random variable with a mean of 70 and standard deviation of 8. If x is normally distributed , what is the probability that x is at least 50?
c) A population has a mean of 4 and a standard deviation of 5 . What is the probability that the random variable x is greater than 4.5 ? If x is normally distributed.
Answers: 3
Mathematics, 21.06.2019 22:00, costel8532
Which of the following graphs could represent a cubic function?
Answers: 1
Mathematics, 21.06.2019 23:40, redhot12352
For a science project, a high school research team conducted a survey of local air temperatures. based on the results of the survey, the found that the average temperatures were around 10 degrees higher than expected. this result was wrong. the trouble with the survey was that most of the locations were exposed to direct sunlight and located over asphalt or sand, which resulted in higher temperatures than normal. this is a classic example of an error in which phase of inferential statistics?
Answers: 1
Q1 a)
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