Mathematics, 05.07.2021 20:30 angel34emb
Question 4: Instructor claims that his new training program will improve the IQ score of undergraduate students. To test his claim at the level a = 0.05, we selected a sample of 5 students and observed their IQ scores before and after the program. The results are given below: 2 3 Sum Student IQ score before IQ score after Difference 1 87 89 90 95 100 104 4 103 106 5 111 112 Do you agree with the claim of the instructor? (a) State your null and alternative hypotheses? (b) Calculate the test statistic. (c) Set up the rejection region for the hypotheses? (d) Construct the 95% confidence interval of the mean difference between the two means (mean before - mean after). What this tells us?​
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Mathematics, 21.06.2019 18:00
Jose predicted that he would sell 48 umbrellas. he actually sold 72 umbrellas. what are the values of a and b in the table below? round to the nearest tenth if necessary
Answers: 2
Mathematics, 21.06.2019 18:30
If the value of x increases by 5, how does the value of m(x + 3) change? a) it increases by 5m. b) it increases by 8m. c) it decreases by 5m. d) it decreases by 8m.
Answers: 1
Mathematics, 21.06.2019 21:30
Which of the following disjunctions is true? 4 + 4 = 16 or 6 - 5 = 11 4 · 3 = 7 or 3 - 2 = 5 8 - 5 = 13 or 7 · 2 = 12 7 - 4 = 11 or 6 + 3 = 9
Answers: 1
Mathematics, 21.06.2019 21:30
What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14
Answers: 2
Question 4: Instructor claims that his new training program will improve the IQ score of undergradua...
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