1. For this study, we should usea. t-test for a population meanb. z-test for a population proportion 2. The null and alternative hypotheses would be: H0: p or μa. <b. >c. =d. ≠H1: p or μa. <b. >c. =d. ≠3. z or t The average final exam score for the statistics course is 76%. A professor wants to see if the average finalexam score for students who are given colored pens on the first day of class is lower. The final exam scoresfor the 13 randomly selected students who were given the colored pens are shown below. Assume that thedistribution of the population is normal.76, 54, 57, 83, 52, 86, 79, 64, 53, 53, 68, 75, 57What can be concluded at the the a = 0.10 level of significance level of significance?a. For this study, we should use Select an answerb. The null and alternative hypotheses would be:Ho: pv Select an answervHị:?v Select an answervc. The test statistic ?v =(please show your answer to 3 decimal places.)

Given Information: The average final exam score for the statistics course is 76% Sample size n=13 To…

Answered: The average final exam score for the…

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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1. For this study, we should use

a. t-test for a population mean

b. z-test for a population proportion

2. The null and alternative hypotheses would be:

H₀: p or μ

a. <

b. >

c. =

d. ≠

H₁: p or μ

a. <

b. >

c. =

d. ≠

3. z or t

The average final exam score for the statistics course is 76%. A professor wants to see if the average final
exam score for students who are given colored pens on the first day of class is lower. The final exam scores
for the 13 randomly selected students who were given the colored pens are shown below. Assume that the
distribution of the population is normal.
76, 54, 57, 83, 52, 86, 79, 64, 53, 53, 68, 75, 57
What can be concluded at the the a = 0.10 level of significance level of significance?
a. For this study, we should use Select an answer
b. The null and alternative hypotheses would be:
Ho: pv Select an answerv
Hị:
?v Select an answerv
c. The test statistic ?v =
(please show your answer to 3 decimal places.)

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

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