final exam
... and ask whether they plan to vote for him. What kind of sampling is this? 2. What method of data collection would best be used to determine whether large doses of vitamin C help to prevent catching a cold ? 3. Identify each quantity as a parameter or a statistic: • p̂ • x̄ • s • µ 4. What is a type ...
... and ask whether they plan to vote for him. What kind of sampling is this? 2. What method of data collection would best be used to determine whether large doses of vitamin C help to prevent catching a cold ? 3. Identify each quantity as a parameter or a statistic: • p̂ • x̄ • s • µ 4. What is a type ...
Class3
... average reading scores for males and females. Use the whole data first. This is already a sample from the population. What conclusions have you drawn? How would you write your conclusion in a report? Sub-sample from this data set. At about what sample size, are you likely to change your conclusion? ...
... average reading scores for males and females. Use the whole data first. This is already a sample from the population. What conclusions have you drawn? How would you write your conclusion in a report? Sub-sample from this data set. At about what sample size, are you likely to change your conclusion? ...
Measures of Variation
... Use the sales data from the previous example to find how many standard deviations of the mean all of the values fall within. 1. Draw a dot plot of the data. 2. Mark where the mean is located on the graph. 3. Mark off intervals the size of the standard deviation on either side of the mean. ...
... Use the sales data from the previous example to find how many standard deviations of the mean all of the values fall within. 1. Draw a dot plot of the data. 2. Mark where the mean is located on the graph. 3. Mark off intervals the size of the standard deviation on either side of the mean. ...
Describing Distributions
... six sigma in quality control). • In other words, only one out of a thousand values will fall outside of six sigma. This distribution is called 'normal' in the sense of 'ideal' or 'standard' against which other distributions may be compared. ...
... six sigma in quality control). • In other words, only one out of a thousand values will fall outside of six sigma. This distribution is called 'normal' in the sense of 'ideal' or 'standard' against which other distributions may be compared. ...
Exam 2 sample
... machine claims that the machine cuts lumber to a mean length of 8 feet (96 inches) with a standard deviation of 0.5 inch. Assume the lengths are normally distributed. You randomly select 25 boards and find that the mean length is 96.25 inches. Assuming the seller’s claim is correct, what is the prob ...
... machine claims that the machine cuts lumber to a mean length of 8 feet (96 inches) with a standard deviation of 0.5 inch. Assume the lengths are normally distributed. You randomly select 25 boards and find that the mean length is 96.25 inches. Assuming the seller’s claim is correct, what is the prob ...
Stat 100 Final Exam Fall 2002
... 6. From a sample of 2300 insurance policies, 391 had at least one claim made. a) Determine the 99% confidence interval for the population proportion of insurance policies with at least one claim. b) What is the conclusion for testing the null hypothesis that the probability of at least one claim is ...
... 6. From a sample of 2300 insurance policies, 391 had at least one claim made. a) Determine the 99% confidence interval for the population proportion of insurance policies with at least one claim. b) What is the conclusion for testing the null hypothesis that the probability of at least one claim is ...