Mathematics, 25.03.2020 05:38 genyjoannerubiera
An educational psychologist wishes to know the mean number of words a third grader can read per minute. She wants to make an estimate at the 80% level of confidence. For a sample of 840 third graders, the mean words per minute read was 40.6. Assume a population standard deviation of 4.1. Construct the confidence interval for the mean number of words a third grader can read per minute. Round your answers to one decimal place.
Answers: 2
Mathematics, 21.06.2019 15:00
Adifferent website gives the cost for the first train as ÂŁ56.88 and the second train as ÂŁ20.11 with a ÂŁ9.50 charge for cycle storage for the whole trip. how much would the journey cost you?
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Mathematics, 21.06.2019 16:40
What is the ratio of the change in y-values to the change in x-values for this function? a) 1: 13 b) 2: 5 c) 5: 2 d) 13: 1
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Mozart lenses inc. recently introduced seelites, a thinner lens for eyelasses. of a sample of 800 eyeglass wearers, 246 said they would purchases their next pair of eyeglasses with the new lenses. lenses inc. estimates that the number of people who purchase eyeglasses in a year is 1,700,000. most eyeglasses wearer buy one new pair of eyeglasses a year. what is the annual sales potential for the new lenses.
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An educational psychologist wishes to know the mean number of words a third grader can read per minu...
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