3.1 Nausea from air sickness affects some travelers. A drug company, wanting to establish the effectiveness of its motion sickness pill, randomly gives either its pill or a look alike sugar pill (placebo) to 200 passengers.

Degree of Nausea

None Slight Moderate Severe Total

Pill 43 36 18 3 100

Placebo 19 33 36 12 100

Total

(a ) Complete the marginal totals

(b) Calculate the relative frequencies separately for each row.

(c )Comment on any apparent differences in response between the pill and the placebo.-NR

3.37 Astore manager has determined that the monthly profit y realized from selling a particular brand of a car battery is given by

y = 10x - 155

Where x denotes the number of these batteries sold in a month.

(a ) If 41 batteries were sold in a month, what was the profit ?

(b) At least how many batteries must be sold in a month in order to make a profit ?

3.25. The Department of National resources in Wisconsin monitors air quality in the state. Ozone is a major component of Smog and high temperatures also contribute the summer maximum daily ozone (ppm)and the temperature for 23 Wednesday during the summer 2011 and 2012 are

Temp 79 93 62 75 69 78 70 98 74 82 77 84

Max Ozone 56 69 43 53 43 44 26 75 42 49 36 60

Temp 91 70 69 93 85 93 102 82 81 80 96

Max Ozone 48 40 41 58 56 87 76 63 48 45 79

Calculate r

Please I need all the formulas and calculations to show while getting the result.