The mean is _______ The standard deviation is _________ B. Compute the test statistic, using the values to 4 decimal places. Report the answer to 3 decimal places. C. Determine the critical value to 3 decimal places. D. Does it appear that the mineral supplement does result in lower cholesterol? Yes No
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.
A dietitian wishes to see if a person's cholesterol level will be reduced if the diet is supplemented by a certain mineral. Six subjects were pretested and then they took the mineral supplement daily for 6 weeks.
| Subject | 1 | 2 | 3 | 4 | 5 | 6 |
| Before | 210 | 235 | 208 | 190 | 172 | 244 |
| After | 190 | 170 | 210 | 188 | 173 | 228 |
Can it be concluded that the mineral has caused the level to be reduced at 0.05 significance level?
A. Compute the differences for Before - After. Then obtain the mean and standard deviation, reporting each to 4 decimal places.
The mean is _______
The standard deviation is _________
B. Compute the test statistic, using the values to 4 decimal places. Report the answer to 3 decimal places.
C. Determine the critical value to 3 decimal places.
D. Does it appear that the mineral supplement does result in lower cholesterol?
- Yes
- No
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