MYMATHLAB F/THINKING MATHEMATICALLY>CU
18th Edition
ISBN: 9780135315811
Author: Pearson
Publisher: PEARSON C
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Chapter 8.5, Problem 52E
Make Sense? In Exercises 47-53, determine whether each statement makes sense, and explain your reasoning.
I’ve been promised a 20% return on an investment without any risk.
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One hundred students were surveyed about their preference between dogs and cats. The following two-way table displays data for the sample of students who responded to the survey.
Preference
Male
Female
TOTAL
Prefers dogs
\[36\]
\[20\]
\[56\]
Prefers cats
\[10\]
\[26\]
\[36\]
No preference
\[2\]
\[6\]
\[8\]
TOTAL
\[48\]
\[52\]
\[100\]
problem 1
Find the probability that a randomly selected student prefers dogs.Enter your answer as a fraction or decimal.
\[P\left(\text{prefers dogs}\right)=\]
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Preference
Male
Female
TOTAL
Prefers dogs
\[\blueD{36}\]
\[\blueD{20}\]
\[\blueE{56}\]
Prefers cats
\[10\]
\[26\]
\[36\]
No preference
\[2\]
\[6\]
\[8\]
TOTAL
\[48\]
\[52\]
\[100\]
There were \[\blueE{56}\] students in the sample who preferred dogs out of \[100\] total students.
For the spinner below, assume that the pointer can never lie on a borderline. Find the following probabilities. (enter the probabilities as fractions)
Evaluate the following integrals as they are written
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- Questions 1. Identify and describe potential bias in the study. 2. Identify and describe the way in which the selected participants may or may not represent the population as a whole. 3. Identify and describe the possible problems with the end results since the majority will be from females rather than an even split. 4. Identify and describe the possible problems with identifying females as possibly more vulnerable based on the data collected. 5. Identify a possible null hypothesis and problems in how the study might address this null hypothesis. 6. Identify one possible method of improving the study design and describe how it would improve the validity of the conclusions. 7. Identify a second possible method of improving the study design and describe how it would improve the validity of the conclusions.arrow_forward25.2. Find the Laurent series for the function 1/[z(z-1)] in the follow- ing domains: (a). 0<|z|< 1, (b). 1<|z, (c). 0arrow_forward25.5. Find the Laurent series for the function 1/[(z - 1)(-2)(z - 3)] in the following domains: (a). 0 3. شهریarrow_forward25.1. Expand each of the following functions f(z) in a Laurent series on the indicated domain: (a). z² - 2z+5 (2-2)(z² + 1)' (c). Log za 2 b (z - موجود 11, 29, where b>a> 1 are real, |z| > b.arrow_forward25.3. Find the Laurent series for the function z/[(22 + 1)(z² + 4)] in the following domains (a). 02.arrow_forward25.2. Find the Laurent series for the function 1/[z(z-1)] in the follow- ing domains: (a). 0<|z|< 1, (b). 1 <|z|, (c). 0<|z1|< 1, (d). 1< |z1|, (e). 1<|z2|<2.arrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
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