Assembly line and weighs contents
A food snack manufacturer samples 7 bags of pretzels off assembly line and weighs their contents. If the sample mean is 12.7 oz. and the sample standard deviation is 0.70 oz., find the 95% confidence interval of the true mean.
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Carry out exploratory data analysis using year as the explanatory variable and EITHER high jump OR discus throw as the response variable. Include in your EDA summary statistics (including r and r2), a scatterplot wi
A study of 55 white mice showed that their average weight was 3.2 ounces. The standard deviation of population is 0.7 ounces. Which of the following is 80% confidence interval for the mean weight per white mouse?
In a sample of 40 mice, a biologist found that 44% were able to run a maze in 30 seconds or less. Find the 99% limit for the population proportion of mice who can run a maze in 30 seconds or less.
Draw 20 more samples and add 20 new x-bars to histogram in part b. Explain the distribution that seems to be developing. Use the empirical rule to test for normality. See the sampling distribution of sample means and the central limit theorem devel
In the current study it was found that the correlation between self-esteem and depression was -.64. Discuss what this means. Compute the coefficient of determination for this correlation and explain what information this provides.
The owner of Weber Chocolates is considering the new machine to make their signature chocolate covered cherry. The present technique, hand dipping each cherry takes on average 41.1 seconds to dip and box dozen cherries.
The Sample standard deviation of sample of 13 UK citizens was 3.5. At the significance level of 0.05 can we conclude that there is the difference in the variance of life expectancy of the two countries?
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