1. a random sample of 10 miniature tootsie rolls was taken …

1. A random sample of 10 miniature Tootsie Rolls was taken from a bag. Each piece was weighed on a very accurate scale. The results in grams were: 3.087, 3.131, 3.241, 3.241, 3.270, 3.353, 3.400, 3.411, 3.437, 3.477 (a) Construct a 90 percent confidence interval for the true mean weight.
2. Using this frequency distribution, answer this question using an insert into a comment box into a cell in your excel file. Find comment in your Excel menu under ‘insert’. (Or send a Word.doc file for this question.) Question: Describe how the number 20 was determined for this frequency distribution? What does it really mean? What is the n value for this frequency distribution? Age Frequency 18-20 4 21-23 8 24-26 11 27-29 20 30-32 7
3. What level of data is shown here? (hint, by level, I am looking for Nominal, Ordinal, Interval, or Ratio as an answer). Raw data collected at a NASCAR speed track for the average speed of these cars. Day 1 Trial Day 2 Trial 220 222 219.8 215.6 221 229.8 222 235.4 210.9 198.7 222.7 250.2
4. Below are two data sets. Using descriptive statistics, discuss the two data sets in relation to each other. I am looking for calculations and a written analysis.. Both data sets come from an operation where potato chips are being placed in small connivance store bags that are to hold 6.0 oz. Note, both calculations and text response is required. You may insert into a comment box into a cell in your excel file. Find comment in your Excel menu under ‘insert’. (Or send a Word.doc file for this question.)
Data from Machine #1 Data from Machine #2 6.1 6.4 5.9 5.6 6.1 6.1 5.8 5.8 6.2 6.7 5.9 5.4 6 6 6 6.4 6.3 6.4 6 6 5.8 5 5.9 5.2 6.1 4.9 6.3 4.8

5. Calculate the confidence interval for this problem. A sample of 64 observations is taken from a normal population. The sample mean is 55, and the sample standard deviation is 10. Determine the 95% confidence interval for the population mean.

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