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In a class of 40, 16 driver a car made outside the United States. What is the confidence interval for the total population of students at the 95% level?
Construct the 90% and 99% confidence interval for population mean. Which interval is wider? If convenient, utilize technology to construct confidence intervals.
Each egg was also measured for volume using a water displacement method. We wanted to know if the two methods agreed or not
Make an interval estimate the population means score for the daycare children so that you are 95% confident that the true mean is in your interval.
Identify the population and the sample: A survey of 787 small-business managers found that 72% are optimistic about the future of their company.
If the variability of the filling machine is reduced to 0.025 ounce, verify that this will lower the required average amount of coffee to 4.050 ounces and yet keep 98 percent of the jars above 4 ounces.
Compute the number of French fries that would have to be sampled and measured to be 98% sure of being within 0.4 cm of the true mean.
Five homes were recently sold in Oxnard Acres. Four of the homes sold for $400,000 while the fifth home sold for $2.5 million. Which measure of central tendency best represents a typical home price in Oxnard Acres?
Testing for two Proportions - Is the difference between the averages statistically significant?
Is there a significant difference in the proportions of patients reporting pain relief? Run the test at a 5% level of significance.
Compute the value of the test statistic (to 2 decimals).
Critically illustrate out the purpose of developing frequency distribution? Describe the relationship between the relative frequency and the cumulative frequency.
The intelligence Quotient test scores normally distributed with a mean of 100 and a standard deviation of 15.
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