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A quality characteristic of interest for a tea-bag-filling process is the weight of the tea in the individual bags. If the bags are under filled, two problems arise. First, customers may not be able to brew the tea to be as strong as they wish. Second, the company may be in violation of the truth-in-labeling laws. In this example, the label weight on the package indicates that, on average, there are 3.40 grams of tea in a bag. If the average amount of tea in a bag exceeds the label weight, the company is giving away product. Getting an exact amount of tea in a bag is problematic because of variation in the temperature and humidity inside the factory, differences in the density of the tea, and the extremely fast filling operation of the machine (approximately 215 bags a minute). The following table provides the weight in grams of a sample of 50 bags produced in one hour by a single machine:
2.95 3.70 3.42 3.40 3.53 2.54 3.54 3.45 3.52 3.813.57 3.40 3.83 2.54 3.55 2.62 3.66 3.46 2.64 3.513.67 3.40 3.47 3.61 2.53 3.32 2.67 3.29 3.49 3.553.77 3.57 3.42 3.58 3.68 3.50 3.32 3.50 3.53 2.583.61 3.45 3.44 3.25 3.56 3.63 3.50 2.57 3.67 3.36
a. Compute the arithmetic mean and median.b. Compute the first quartile and third quartile.c. Compute the range, interquartile range, variance, standard deviation, and coefficient of variation.d. Interpret the measures of central tendency within the context of this problem. Why should the company producing the tea bags be concerned about the central tendency?e. Interpret the measures of variation within the context of this problem. Why should the company producing the tea bags be concerned about variation?
A random sample a 16 Google managers yield the following information on annual salaries. The sample mean is $69,000, with a sample standard deviation of $4,000. What is the mean salary of all Google managers?
A company produces calculators in batches of 64. Four out of every 100 calculators are defective. State the random variable for this situation and list its values.
If probability of getting sample mean x less than unreported sample mean is 0.025, determine value of the unreported sample mean?
The credit score of a 35 year old applying for a mortgage at Ulysses Mortgage Associates is normally distributed with a mean of 600 and a standard deviation of 100.
Develop a linear regression equation for the given data and forecast how much money Robert will win if he spends $30.
A machine produces parts with lengths that are normally distributed with ? = 0.59. A sample of 19 parts has a mean length of 76.26.
You have 4 jars. In the largest jar you have three balls numbered 1 to 3. Then you have 3 colored jars. Jar 1 has a red ball and two orange balls.
If a worker is known to strongly agree with the statementMy current job brings out the most creative ideas" what is the probability that the worker is engaged?
Shows a sample mean of 1,261 with a standard deviation of 59. Should Pennsylvania adopt the new system for all toll roads in the state?
Evaluate the data below using the Kruskal - Wallis Nonparametric Hypothesis Test. Explain why you chose this particular nonparametric test to analyze your data.
Construct a 90% confidence interval for the population proportion, p, in order to test the claim from a confidence interval point of view. What is the best point estimate for p?
Assess the model fit for the multiple linear regression model using appropriate statistics and graphics.
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