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Thirty-six percent of women consider themselves basketball fans. You randomly select six women and ask each if she considers herself a basketball fan. a) construct a binomial distribution b) graph the binomial distribution using a histogram
Using the .05 level of significance: a) Is there a difference among types of gasoline? b) Is there a difference in the cars?
For each year, create a bar chart and a pie chart.
In a sample of 60 mice, a biologist found that 46% were able to run a maze in 30 seconds or less. Find the 99% limit for the population proportion of mice who can run that maze in 30 seconds or less?
Assume that sigma = 60, choose an alpha level, and perform a hypothesis test to determine whether this is good evidence to conclude that the mean score for all young men is less than 275.
If person is selected at random determine the probability that he/she has enzyme level less than 4.0 units/ml?
Class where the mean is 85 and the standard deviation is 4.59, who did better relative to their class? Note both did better than the class mean. How do you answer this question?
Compare the mean of the sampling distribution of sample means with that of the population.
A sample of 93 IQ scores was randomly selected from a certain population. At the 0.03 level of significance, test the hypothesis that the population has a mean IQ of 105.
The weights (in pounds) of a sample of five boxes being sent by UPS are: 12, 6, 7, 3, & 10.
Find a 90% confidence interval for the population average µ of the percentage of hospitals providing at least some charity care.
With standard deviation of 15. Test hypothesis that Mrs. Smith and Mrs. Jones are equally effective teachers. Use 0.10 level of significance.
Which two types of probability sampling are best suited for business research and statistical data analysis, and why?
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