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Question: 1. The mean of any distribution has a z score equal to what value?
2. What conclusion can you reach about ∑z?
3. Under what conditions would you prefer that your personal z score be negative rather than positive?
barbara miller makes decisions according to bayes decision rule. for her current problem barbara has constructed the
customers arrive at a bakery at an average rate of 6 per half-hour. each customer spends an average of 2.50.a what is
the number of complaints that a discount store receives on their product per week is a random variable having poisson
Find the mean and median of the salaries of all shortstops. Are any of these measures influenced significantly by one or more unusual observations
Write the four parts for a one-sided, left-tailed hypothesis test concerning the population mean with a = 0.001.- What assumptions are made in order for the test in part (a) to be appropriate?
Generate 500 different random samples of n = 5 observations. Draw a sketch showing the shape of the histogram of sample means for random samples of n = 5.
A standard deviation of .15 million people. What is the proportion of these newscasts having between .9 million and 1.5 million viewers?
a doctor wants to estimate the hdl cholesterol of all 20-to 29- year-old females. how many sunjects are needed to
to test the effect of sample size in a normal distribution with mu100 and sigma12 determine the probability of
Use the list of random digits below to assign 4 men and 2 women to the shark fin treatment. Read the table from left to right, first selecting the 4 men and then the 2 women. Use the numerical labels given in the chart to the names.
suppose the lifetime of a particular appliance follows an exponential distribution with a mean of 10 years. what is the
At a = 0.05, is there a significant difference in the proportions? Find the 95% confidence interval for the differenc of the two proportions.
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