Mathematics, 06.05.2020 03:44 krlx
1 point) (Hypothetical.) A random sample of 100 people from City A has an average IQ of 120 with a SD of 18. Independently of this, a random sample of 150 people from City B has an average IQ of 116 with a SD of 15. Are residents of City A smarter on average? Make a z-test of the difference in average IQs; the null hypothesis is that there is no difference. Round your values to three decimal places. If the null is right, the expected value of the difference between average IQs in each sample is , and the standard error of this difference is estimated to be . The observed difference is . The test statistic is . The P-value is approximately
Answers: 2
Mathematics, 21.06.2019 18:30
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Mathematics, 21.06.2019 19:30
Which inequalities can be used to find the solution set of the following inequality? check all that apply. |2x – 5| (2x – 5) (2x + 5) –(2x – 5) –(2x + 5)
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Mathematics, 22.06.2019 01:00
The correlation coefficient between the number of students and marks obtained in end semester exam. (13 marks) give the statistical meaning of the relationship between the number of students and marks b. obtained in end semester exam. (3 marks) draw the number of students and marks obtained in end semester exam scatter diagram c. (4 marks) check list write your name and id corectly write the question number properly use your own calculator. show all the steps to solve the problems. use the correct formula. answer in provided time. don't use your mobile for any purpose. write your answer up to two decimal places
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Mathematics, 22.06.2019 01:00
In each diagram, line p is parallel to line f, and line t intersects lines p and f. based on the diagram, what is the value of x? ( provide explanation)
Answers: 1
1 point) (Hypothetical.) A random sample of 100 people from City A has an average IQ of 120 with a S...
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