Mathematics, 09.07.2020 05:01 deandrebryant89
g A researcher is interested in whether people are able to identify emotions correctly when they are extremely tired. It is known that, using a particular method of measurement, the accuracy ratings of people in the general population (who are not extremely tired) are normally distributed with a mean of 82 and a variance of 20. In the present study, the researcher arranges to test 50 people who had not slept the previous night. The researcher predicts that these people will have different accuracy than the general population, but does not predict a direction. The mean accuracy for these 50 individuals was a 78. Using the .05 level of significance, what should the researcher conclude
Answers: 3
Mathematics, 21.06.2019 16:50
Suppose that the price p (in dollars) and the weekly sales x (in thousands of units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80, pequals20, and the price is falling at the rate of $.20 per week.
Answers: 3
Mathematics, 21.06.2019 17:00
This figure consists of a rectangle and semicircle. what is the perimeter of this figure use 3.14 for pi 60.84m 72.84m 79.68m 98.52m
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Mathematics, 22.06.2019 01:00
How would you find the height of points on the circle? the topic is trigonometry.
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Mathematics, 22.06.2019 01:50
The area of each triangle is 7 square units. the surface area of the triangular prism is
Answers: 1
g A researcher is interested in whether people are able to identify emotions correctly when they are...
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