The mean IQ for the U.S. is 100 with a standard deviation of 15. A Troy statistics professor thinks Troystudents are smarter than average, so he randomly samples 10 students and records the following IQ data totest his hypothesis. What conclusion should you make?IQ: 95 100 105 110 115 100 105 110 105 105the data support the claim that Troy students have an IQ greater than 100O the data do not support the claim that Troy students have an IQ greater than 100O the data support the null hypothesisO the data fail to support the alternative hypothesis The mean IQ for the U.S. is 100 with a standard deviation of 15. A Troy statistics professor thinks Troystudents are smarter than average, so he randomly samples 10 students and records the following IQ data totest his hypothesis. What decision should you make?IQ: 95 100 105 110 115 100 105 110 105 105Oreject the nullO accept the nullfail to reject the nullO accept the alternativeO reject the alternativeO retain the null

Given : µ = 100 σ = 15 N = 10 df = 10 - 1 = 9 Mean(M) = (95+100+105+...105)/10 = 105 Null…

Answered: The mean IQ for the U.S. is 100 with a…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The college physical education department offered an advanced first aid course last summer. The scores on the comprehensive final exam were normally distributed, and the z-scores for some of the students are shown below. Robert 1.24 Juan 1.66 Haley −1.84 Joel 0.00 Jan −0.84 Linda 1.68 Which of these students scored above the mean? (Select all that apply.) Which of these students scored on the mean? (Select all that apply.) Which of these students scored below the mean? (Select all that apply.) If the mean score was μ = 140 with standard deviation σ = 15, what was the final exam score for each student?
Which statement below is correct? a. Standard deviation should be used when calculating z for a single score, while standard error should be used when calculating z for a sample mean. b. When calculating z for a single score or for a sample mean, the standard error should be used. c. Standard error should be used when calculating z for a single score, while standard deviation should be used when calculating z for a sample mean. d. When calculating z for a single score or for a sample mean, the standard deviation should be used.
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A population has a mean u = 87 and a standard deviation o = 28. Find the mean and standard deviatio sample sizen=49. =(Simplify your answer.) (Simplify your answer.) Enter your answer in each of the answer boxes. ch %3D
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Three students were applying to the same graduate school. They came from schools with different grading systems. Thuy is Vichet is Kamala is Number Number Student GPA School Thuy Number 2.5 Vichet 86 Table 2.74 School Average 2.8 80 Kamala 8.5 8.3 How many standard deviations is each student away from hiir school average? If the student GPA is higher than his school average, enter this as a positive number. If the student GPA is lower than his school average, enter this as a negative number. Average GPA GPA School Standard Deviation 0.8 10 0.5 standard deviations from Thuy's school average. standard deviations from Vichet's school average. standard deviations from Kamala's school average.
The test for the equality of two population variances is based on which of the following? a The ratio of the two sample variances. b The difference between the two population variances. c The difference between the two sample variances. d The ratio of the population variances to the sample variances.
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