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Set up the equation needed to solve the problem.
1. A rectangular garden has dimensions of 25 feet by 19 feet . A gravel path of equal width is to be built around the garden. How wide can the path be if there is enough gravel for 672 square feet?
2. The area of a square is 81 square centimeters . If the same amount is added to one dimension and removed from the other , the resulting rectangle has an area 9 square centimeters less than the area of the square .How much is added and subtracted ?
Solve the problems using algebra.
1. When making a long distance call from a certain pay phone , the first three minutes of a call cost $1.40. After that , each additional minute or portion of a minute of that call cost $0.35. Use an inequality to find the maximum number of minutes one can call long distance for $6.30.
2. A rectangular carpet has a perimeter of 144 inches . The length of the carpet is 52 inches more than the width. What are the dimensions of the carpet.
Based on point estimate of each sample. Explain how confidence intervals will change depending on whether population standard deviation is known or unknown.
Brain cancer is a rare disease. In any year there are about 3.1 cases per 100000 od population. Suppose a small medical insurance company has 150000 people on its books.
Determine the mean, median and mode of those data. Make sure you show your hand computeed work. Is there any indication from this group of data that the new policy holder may lean toward younger ages?
Write ten-step study plan with suitable example that will permit you to analyze your data.
Suppose that the grams of fat have a normal distribution and form 90%, 95%, and 99% confidence intervals for the mean grams of fat. Based on this data, can we say that the labeling on the package is misleading?
Standard deviation of 0.02 ounce. You can permit cup to overfill 4% of the time. What amount must you set as mean amount of coffee to be dispensed?
Genzero Pharmaceuticals developed the following regression model based on time series data from the past 33 quarters, for one of its non-prescription cold remedies:
What signified to you on all of the problems that required a normal distribution that you were to use a normal distribution? Which problems required a normal distribution?
Decision making using the Transportation method.
Fair die is rolled 10 times. Determine the probability that the odd number (1, 3 or 5) will occur less than 4 times?
Use Excel and the data to test whether the mean alcohol expenditures for UCM students is equal to that of SBU students using a 1 % level of significance.
Determine the probability that mean height of random sample of 100 women is greater than 66 inches?
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