Question 2A researcher is interested in finding a 98% confidence interval for the mean number minutesstudents are concentrating on their professor during a one hour statistics lecture. The studyincluded 149 students who averaged 37.9 minutes concentrating on their professor during thehour lecture. The standard deviation was 10.6 minutes. Round answers to 3 decimal placeswhere possible.a. To compute the confidence interval use a? distribution.b. With 98% confidence the population mean minutes of concentration is betweenminutes.< >c. If many groups of 149 randomly selected members are studied, then a different confidenceinterval would be produced from each group. Aboutpercent of these confidenceintervals will contain the true population mean minutes of concentration and aboutpercent will not contain the true population mean minutes of concentration.Hint: HintsVideo [+]Submit QuestionandMacBook Air

Given that: Sample size, n = 149 Sample mean, x¯=37.9 Population standard deviation, σ=10.6

Answered: A researcher is interested in finding 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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Assume that adults have IQ scores that are normally distributed with a mean of 96 and a standard deviation 19.3. Find the first quartile Q1,which is the IQ score separating the bottom 25% from the top 75%. The first quartile is?
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