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Suppose the following data are selected randomly from a population of normally distributed values.
44 51 43 48 45 57 54 39 41 48 45 39 45
Construct a 95% confidence interval to estimate the population mean.
Suppose you are on a test and are asked to determine whether the given experiment is binomial, Poisson, or neither. What are you going to think about to determine which test to use. Do you have a checklist? How would you approach this problem?
Telephone calls arrive at a switchboard in a Poisson process at the rate of 2 per minute. A random one-tenth of the calls are long distance.
Developing the histogram and pie chart for the sample data.
use exponential smoothing with 2 between 0.1 and 0.4 to get forecasts one period ahead for the following time series.
a doctor is trying to determine whether her patients prefer a male nurse or a female nurse. after asking 25 male
M&M Milk Chocolate candies colors are not all the same proportion. Blue consist of 24% of the bag pieces while Brown & Red only 13% each. The following was found:
three cards are randomly selected without replacement from a standard deck of 52 playing cards. compute the conditional
assuming that ssy is constant which of the following correlations would have the smallest ssresidual?please explain
For these 4 questions below what would be the independent and dependent variables, the level of measurement and whether or not the variable is discrete or continuous.
A quality control specialist compares the output from a machine with a new lubricant to the output of machines with the old lubricant.
A farm brings 15 tons of watermelon to market. Find a 90% confidence interval for the population mean cash value of this crop. What is the margin of error?
Advertisers need to know which age groups are likely to see their ads. Purchasers of 120 copies of Cosmopolitan are shown by age group.
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