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ACT scores for high school students are normally distributed with mean=24.1 and standard deviation=4.3. Student from the high school is arbitarily selected. Reply the following questions:
1) Determine the probability that the student's ACT score is less than 22?2) Determine the probability that the student's ACT score is between 22 and 30?3) Determine the probability that the student's ACT score is more than 30?4) Determine the minimum ACT score which places student at the top 5%?
The Central Limit Theorem states that the sampling distribution of means is:
Use these statistics to construct a 94% confidence interval for the mean monthly consumption for the population of all Ontario households.
Computing the mean value for the given data - What is the new mean for the class and frequency distribution graph, what type of graph should be used
Conduct a one-tailed hypothesis test given the information below. A certain brand of Green Energy light bulbs was advertised as having an average illumination life-span of 2,500 hours.
There're several measures of central tendency. By far the most frequently utilized of these measures is mean of population. Remember that the source of the data that you want to analyze always comes from what is called a population.
A sample of 25 concession stand purchases at the October 22 matinee of Bride of Chucky showed a mean purchase of $5.29 with a standard deviation of$3.02.
Identify at your place of work (or a previous place of work, or an organization with which you are affiliated). Identify a dependent variable and 3 independent variables
To test the given claim using Single Proportion Z test.
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.
A company sampled 40 of the springs that it manufactures for use in small engines and discovered that 20% of the springs did not meet specifications.
A researcher collected sample data for 17 women ages 18 to 24 . The sample had a mean serum cholesterol level (measured in mg/100 mL) of 188.8 , with a standard deviation of 5.5.
Construct a bar and pie chart to graphically display these data by using Microsoft excel.
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