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For the following find the appropriate 95% confidence interval for the corresponding population proportion:
(a) sample size = 86, sample proportion = 0.44;
(b) sample size = 250, sample proportion = 0.44.
Develop a 95% confidence interval for the proportion of the population of adults who feel customer service is better today than it was 2 years ago.
a repeated-measures study comparing two treatments with n 4 participants produces md 2 and ss 75 for the difference
1 according to a recent study 1 in every 10 women has been a victim of domestic abuse at some points in her life.
If the estimate is to be within 8 mpg of the true mean with 98% confidence and the estimated standard deviation is 22 mph, how large a sample size must be taken?
The amount of time a bank teller spends with each customer has a population mean = 3.1 minutes and population standard deviation = 0.4 minute.
You are told that 95% of the scores range between 300 and 660. Using the 68, 95,99.7 rule, what is the standard deviation of exam scores?
Draw a tree diagram depicting the sample space outcomes for this experiment.
question samples of n 5 units are taken from a process every hour. the xoline and r values for a particular quality
The results of the simple linear regression are provided below.
Choose a person aged 19 to 25 years at random and ask, "how many times have you worked out in the past?" Call the response X for short.
Houston is $19,900 and in Los Angelos is $21,800. What is the probability that a brand manager in Houston has a base salary in excess of $100,000?
You work at a facility and want to perform an assessment of your safety culture – this would involve multiple topics of questions expecting answers like agree, tend to agree, not sure, tend to disagree, disagree.
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