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The taxicab company claims that the mean travel time between two destinations is about 21 minutes. Reject this claim. Explain how to write the null and alternative hypothesis.
How have statistics been used inappropriately and what are some examples of when you have seen or heard statistics used inappropriately?
The Cadet is a popular model of sport utility vehicle, known for its relatively high resale value. The bivariate data given below were taken from a sample of sixteen Cadets
Describe the data appear the strength of the relationship among variables is sufficient to warrant using linear regression forecasting.
In a perfectly symmmetrical distribution: a) the range equals the interquartile range b) the interquartile range equals the mean c) the median equals the mean d) the variance equals the standard deviation
Kurt's Adventures, Inc. stock is quite cyclical. In a boom economy, the stock is expected to return 30% in comparison to 12% in a normal economy and a negative 20% in a recessionary period.
A skeptical paranormal researcher claims that the proportion of Americans that have seen a UFO is less than 1 in every one thousand. State the null hypothesis and the alternative hypothesis for a test of significance.
A manufacturer of athletic footwear claims that the mean useful lifetime of his product will exceed 50 hours. A random sample of 36 pairs of shoes leads to the following sample results, in terms of useful life: x = 52.3 hours and s = 9.6 hours.
Please use a combination of content and supportive examples.
Is the annual average wage of unmarried people (18 - 30) the same as that of married people (31 - 43)?
A Private firm reports that 8% of the 2 million small businesses who apply for loan each year receive special interest rate (usually higher than market rate) because of high riskiness associated with small business.
Find an equation of the least squares regression line. Please show your work. Is there a linear correlation between "x" and "y" at the 0.01 significance level? Please justify your answer.
Standard deviation of 0.02 ounce. You can permit cup to overfill 4% of the time. What amount must you set as mean amount of coffee to be dispensed?
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