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MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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![**Question 18**
A random sample of n = 144 scores is selected from a population whose mean = 230 and standard deviation = 15. What is the probability that the sample’s mean will be below M = 228? (Please input answer as a probability with four decimal places).
---
**Question 19**
A random sample of n = 169 scores is selected from a population whose mean = 195 and standard deviation = 32. What is the probability that the sample’s mean will be between M = 193 and M = 197? (Please input answer as a probability with four decimal places).
---
**Question 20**
"A clinician has found a significant effect of a new drug and wants to know the effect size. If the population mean = 45 with a standard deviation = 16.5 and the clinical observed a sample of n = 64 had a mean = 41, then what would be the effect size in terms of Cohen’s d?"
- 0.24
- -0.24
- 1.94
- -1.94](https://content.bartleby.com/qna-images/question/8a28a380-2121-4133-b35d-e9a8f94c0516/14246c55-ed3c-44fd-9455-ba39527d5248/xlzb3x_thumbnail.jpeg)
Transcribed Image Text:**Question 18**
A random sample of n = 144 scores is selected from a population whose mean = 230 and standard deviation = 15. What is the probability that the sample’s mean will be below M = 228? (Please input answer as a probability with four decimal places).
---
**Question 19**
A random sample of n = 169 scores is selected from a population whose mean = 195 and standard deviation = 32. What is the probability that the sample’s mean will be between M = 193 and M = 197? (Please input answer as a probability with four decimal places).
---
**Question 20**
"A clinician has found a significant effect of a new drug and wants to know the effect size. If the population mean = 45 with a standard deviation = 16.5 and the clinical observed a sample of n = 64 had a mean = 41, then what would be the effect size in terms of Cohen’s d?"
- 0.24
- -0.24
- 1.94
- -1.94
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