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1. An experiment consists of making 80 telephone calls in order to sell a exacting insurance policy. The random variable in this experiment is a
a. discrete random variable b. continuous random variable c. complex random variable d. none of the above is correct
2. In textile industry, a manufacturer is interested in the number of blemishes or flaws occurring in each 100 feet of material. Of the following probability distributions, the one that most applies to this situation is the
a. normal distribution b. binomial distribution c. Poisson distribution d. uniform distribution e. none of the above is correct
Construct a 90 percent confidence interval for the true mean weight. Describe factors which might cause variation in the weight of Tootsie Rolls during manufacture.
If we select one box of cereal at random from this population, what is the probability that it will weigh less than 915 grams?
What is the probability that the mean price for a sample of 30 service stations is within $.03 of the population mean (to 4 decimals)?
For each of the following problems, assume that the homogeneity of variance assumption has not been met and that you will need to use the adjusted Welch statistic.
Interpreting confidence interval for the P-value. Give an appropriated response. A weight loss center provided a loss for 72% of its participants.
Assume that a hand of 12 cards is dealt from a normal deck of 52 playing cards. What is the probability that of the 12 cards, 3 will be diamonds, 3 will be clubs, 3 will be spades, and 3 will be hearts.
The world record time (in minutes) in the marathon is plotted versus the year in which the record was set for men and women separately. The plotting symbol o is used for men and x for women. The data include only records set between 1908 and 1988.
Recognize the given samples are independent samples or matched pairs.
Determine the variance of X? (Illustrate your computation either in Table or in Equation form)
Organize data into a frequency distribution. How many classes would you propose? What value would you propose for class interval?
Do 1-sample t-test to see if people in Chicago have travelled to fewer states than people nationwide. Utilize the 10% (.10) level of significance.
Fawns Fawns among1 or 5 months old in Mesa Verde National Park have a body weight that is approximately normally distributed with mean
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