Seven percent of those who invest in mutual funds consider corporate stocks to be “very safe”, 58% consider them “relatively safe”, 24% consider them “not very safe”, 4% consider them “not safe” and 7% "They are not safe at all." Business / Week / Harris asked 550 mutual fund investors how they would rate corporate bonds for safety. The answers were the following Seguridad Frecuencia Very safe 62 Relatively safe 323 Not very safe 76 Not safe 26 Not safe at all 63 Does the attitude of mutual fund investors differ from corporate bonds from their attitude to corporate stocks? Support your conclusion by giving a statistical test. Use α = 0.01. For this problem you must present: -Hypothesis -Result of the expected values, residuals and the calculation of the test statistic. -Analysis of the results in the chi square test and its conclusion in applied terms of the problem
Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
Seven percent of those who invest in mutual funds consider corporate stocks to be “very safe”, 58% consider them “relatively safe”, 24% consider them “not very safe”, 4% consider them “not safe” and 7% "They are not safe at all." Business / Week / Harris asked 550 mutual fund investors how they would rate corporate bonds for safety. The answers were the following
|
Seguridad |
Frecuencia |
|
Very safe |
62 |
|
Relatively safe |
323 |
|
Not very safe |
76 |
|
Not safe |
26 |
|
Not safe at all |
63 |
Does the attitude of mutual fund investors differ from corporate bonds from their attitude to corporate stocks? Support your conclusion by giving a statistical test. Use α = 0.01.
For this problem you must present:
-Hypothesis
-Result of the
-Analysis of the results in the chi square test and its conclusion in applied terms of the problem
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