# Explain the relationship between mechanical advantage of the knee extensors and the amount of tension developed in this muscle group

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e the demographic status in detail. Q2. What is the expenditure pattern of respondents by sex, education and occupation? Use appropriate statistical methods to describe the answer. Q3. Does type of bank account affect income? Explain with the help of data and fig. Q 4. What is relationship between age and different kind of expenditure (food, education and health)? Explain with the help of appropriate statistical results. Q.5 Use the appropriate statistical methods to test the following null hypothesis: a. There is no association between gender and occupation. b. There is no significant relationship between income and expenditure. c. There is no significant relationship between age and health expenditure. d. There is no significant relationship between age and total expenditure. e. Health expenditure of male is not significantly different from female. Q 6. What is the impact of income and age on education expenditure, health expenditure and total expenditure? Explain with the help of regression analysis.
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bacteria). Obligatory anaerobes require absence of oxygen. You are researching how a facultative anaerobe transitions from anaerobic to aerobic respiration along the length of the human intestine (small and large intestine), where oxygen levels – and with them respiration - vary from atmospheric levels of oxygen (aerobic respiration) to no oxygen (anaerobic respiration). You grow cultures of a facultative anaerobic bacteria in flasks with different levels of oxygen that mimic the conditions in the 7.5m long human intestines and collect data on the growth rates of the bacteria (number of bacterial colonies) under the different conditions. Time food spends in the small intestine, 2.5m long, is 4 hrs. The time taken for food to pass through the entire length of the intestine is between 24 and 72 hrs. To determine oxygen levels in your flasks, you use the ratio of oxygen to nitrogen, which you vary between 0 (no oxygen) and 0.25 (atmospheric levels of oxygen). You assume that for conditions where r<0.01 your bacteria will be obligatorily anaerobic, and aerobic respiration will be observed from r=0.05. If the oxygen ratio goes from 0.25 to 0 over 7.5 m, and rO2 = 0.25 – 0.03x (x=distance along the intestine) describes the relationship between oxygen ration and the length of path travelled by the bacteria in the intestine, how long will it take bacteria to pass from the small into the large intestine? Explain how you arrived at your estimate.
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1.AU MAT 120 Systems of Linear Equations and Inequalities Discussion

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