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Use the given date to find the minimum sample size required to estimate a population proportion and populat mean. Margin of error: 0.004, confidence level, 90%, sample proportion (p) : = 0.45
The grades of 20 students are listed in the stem and leaf diagram below. What is the probability of randomly selected student to have a grade more than or equal to 60 and less than or equal to 80.
What is your conclusion? Are the two variables independent?
What is the probability that the sample will have between 50% and 60% of the identifications correct? What is the probability that the sample percentage of correct identifications is greater than 65%?
Critically discuss the purpose of developing a frequency distribution? What is the relationship between the relative frequency and the cumulative frequency? Could a frequency distribution contain qualitative data? Why?
Using the business problem selected ( business, economic or marketing)develop a problem statement which can be addressed with survey research. Prepare a 10-13-question survey to collect primary data regarding your selected problem statement.
If the server has 40 customers in one shift, what is the probability that her total tips are less than $250? (Assume that these 40 customers represent a simple random sample).
Suppose you wish to build a spa on a wood deck. The deck is to be built 4 ft above level ground. It is to be 50 ft by 30 ft and is to contain a spa that is circular with a 14-ft diameter. The spa is 4 ft deep.
Ms Moline is the budget director for Nexus Media Inc. She is comparing travel costs for sales and the audit staff. She collected the following sample data:
If you draw one ball from the urn what is the probability that it is blue or white?
The 90% confidence interval to estimate the true average difference in nationwide sales quantity before the ad campaign and after is (0.39, 16.64). Which of the following is the appropriate conclusion? The differences were calculated as (after ad ..
Identify the point estimate of the average number of available hotel rooms in this lesson from each sample. Construct and Interpret a 95% confidence level for the true mean number of available hotel rooms, based on the point estimate of each sampl..
A study of 36 members of the Central Park Walkers showed that they could walk at an average rate of 2.6 miles per hour. The sample standard deviation is 0.4. Find the 95% confidence interval for the mean for all walkers.
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