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1. A simple random sample of 50 adults Is obtained and each person's red blood cell count is measured (in microliters). The sample mean is 4.63. The population standard deviation for red blood cell counts is .54. Construct a 99% confidence interval estimate of the mean red blood cell count of adults. 2. What percentage of a normal distribution is within 2 standard deviations of the mean? (Select the closest answer.) a. 50%b. 95%c. 75%d. 100% 3. The area under the standard normal distribution between -2.5 and 1.5 isa. 0.1338b. 0.1668c. 0.4332d. None of the above 4. A real estate agent records the ages of 50 randomly selected home buyers in her sales area. The mean age is 38 years, with a sample standard deviation of 8 years.
a. Find a 99% confidence interval for the population mean age. 5. A simple random sample of 120 SAT scores has a mean of 1520. Assume that SAT scores have a standard deviation of 300. Construct a 95% confidence interval estimate of the mean SAT score.
MATH1550H: Assignment: Question: A word is selected at random from the following poem of Persian poet and mathematician Omar Khayyam (1048-1131), translated by English poet Edward Fitzgerald (1808-1883). Find the expected value of the length of th..
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MATH1550H: Assignment: Questions: Let’s assume the department of Mathematics of Trent University has 11 faculty members. For i = 0; 1; 2; 3; find pi, the probability that i of them were born on Canada Day using the binomial distributions.
Caselet on McDonald’s vs. Burger King - Waiting time
Generate descriptive statistics. Create a stem-and-leaf plot of the data and box plot of the data.
Problems on Sampling Variability and Standard Error and Confidence Intervals
Estimate the population mean
Conduct a marketing experiment in which students are to taste one of two different brands of soft drink
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