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a. What are the mean, variance and standard deviation of the data?provided?b. What is the probability of occurrence (percentage) of ± 2 standard deviations? c. At a likelihood of 68% error rate, how many errors might you expect? d. What are the chances (in percentages) that you will receive coding errors between minus ( -) 2 standard deviations to plus (+) 1 standard deviation? e. What are the odds (in percentage) the number of errors will exceed -1 standard?deviations to plus +3 standard deviations? f. What prospect (percentage) is there that you will exceed coding errors greater the?99.7%?
A population of 1000 students spends an average of $10.50 a day on dinner. The standard deviation of the expenditure is $3. A simple random sample of 64 students is taken.
4th graders in the US take a standardized test for math. The national average score is 237. Did your state, as represented by your students, out perform the national average using a statistically significant measure?
Use regression analysis to develop an estimated regression equation that could be used to predict the value score given the price of the car.
a) Test whether there is a difference between attitudes in the 2 cities. Use a 95% alpha. b) What does your result say about attitude consistency across cities?
An annexation suit is being considered against a county subdivision of 600 residencies by a neighboring city. If 40% of the residents favor being annexed and if a random sample of 15 will be collected,
Find the probability that the carbon monoxide concentration exceeds 9 ppm during a randomly selected one-hour period.
If one employee is randomly selected, find the decimal probability (four decimal places) that his/her commute takes the following amount of time.
The Weithoff company has a contract to produce 10000 garden hoses for a customer. Weithoff has 4 different machines that can produce this kind of hose.
The price of shares of Bank of Florida at the end of trading each day for the last year followed the normal distribution. Assume there were 240 trading days in the year.
The average height of a particular plant is known to be 78 cms. The average height of 20 plants to which a particular manure was applied was found to be 85 cms.
Given the following data on Asian and European Share of U.S. Light Truck Sales(1990-2003): Which trend model is best, and why? If none is satisfactory, explain.
Based on a survey of over 10,000 households, the number of televisions in the home was recorded as given in the table below. Based on the data, find the expected number of televisions in a home.
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