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1. For a population that is normally distributed with a mean of 100 and standard deviation of 10, what value would separate the smallest 20% of values from the next larger 80% of values?
2. A population is normally distributed with a mean of 30 and a standard deviation of 5. What is the probability of randomly sampling this population and getting a value of 25 or less? Give answer as 0.XXXX
3. Give the z value for z notation: z(0.44) Give answer as X.XX
an economist wants to estimate the mean income for teh first year work for a college graduate who has had the profound
Suppose that the conclusion from an ANOVA is that the null hypothesis is rejected, in other words that the 6 population means are not all equal. What should we expect?
How large a sample should she check in order to be 90% confident that the true proportion is estimated to within 1.5%?
which of the following statements regarding a negative correlation is true?a. high values of the x variable tend to be
the National Indian Gaming Association are dedicated to Native American affairs. What effect have these organizations had on reducing tribal poverty encouraging prosperity?
a major department store chain is interested in estimating the average amount its credit card customers spent on their
Define a normal mode of operation when at least two frequencies are working and an emergency mode of operation when at least one frequency is working. Define the event when the system is working as OK.
Compare the mean for the heights of males and the mean of the heights of females in the following data. Compare the values and explain what can be concluded based on the numbers.
Discuss the ability of the process to meet the customer's specifications. Also, if the customer seeks Six Sigma compliance, what are your recommendations?
A researcher studies the relationship between political attitudes and income. He/she finds that those with higher income are more conservative.
a family has 8 children .they wants to take a photo of them sitting in a single line. in how many different ways can
Almost 20% of the stratum was sampled compared to the second stratum where only 2% of the stratum was sampled. Will this phenomenon introduce bias into the above estimates?
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