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A sample of 100 bugs yields an average weigh tof 7.7 ounces. Assume the population st.dev is 0.8 oz, what is the margin of error in estimating mu at the 99% conf interval
Compute 99% confidence intervals for the average daily maximum temperature in August for each of the three years in which you collected data. How do they compare?
use the given information to find the minimum sample size required to estimate an unknown population mean micro.margin
according to the irs the average tax refund for the 70 million personal income tax returns in 1998 was 800. assuming a
Identify all the averages (mean, median, or mode) that can be used to summarize the data. Dollar amount due on next payment.
1.i plan an experiment to test the latest conflicting diet programs. the factor for diet will involve three different
Construct the confidence interval to find the estimated margin of error. Then find the sample mean and you are given the sample mean and sample standard deviation. Use this information to construct the 90% and 95% confidence interval for the popula..
A pollster calls 500 randomly selected people and all 500 respond to her first question. Because the subjects agreed to respond, is the sample a voluntary response sample?
Would this indicate that the actual proportion of stopped drivers given tickets is not equal to .88? Use a 1% significance level.
The production manager wants to estimate the proportion of defective parts received from this supplier. She believes the proportion defective is no more than 0.15 and wants to be within 0.04 of the true proportion of defective parts with a 90% lev..
only 1 in 1000 adults is afflicted with a rare disease for which a diagnostic test has been developed. the test is such
Carry out an overall test to determine if there is significant evidence of a difference among A; B and C, at the significance level 1%.
construct a 95 confidence interval to estimate the population proportion with a sample proportion equal to 0.60 and a
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