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License plates in the state of Maryland consist of three letters of the alphabet followed by three digits.
a. The Maryland system will allow how many possible license plates?
b. Of these, how many will have all their digits distinct?
c. How many will have distinct digits and distinct letters?
Calculate the chi-square statistic and degrees of freedom for the following set of data for 180 people undergoing a knee replacement treatment with a drug supplement - Kruskall-Wallis test c. Independent groups t-test.
Horizon Wireless, a cellular telephone company, is expanding into a new era. Relay towers are necessary to provide wireless telephone coverage to the different areas of the city.
Identify the null hypothesis, alternative hypothesis, test statistic, P-value or critical conclusion about the null hypothesis and final conclusion that addresses the original claim.
Standard deviation of 4 beats per minute. If 300 women are examined, how many would you expect to have a heart rate less than 75?
Distributed with a mean of 9.5 years and a standard deviation of 1.8 years. Find the replacement time that separates the top 18% from the bottom 82%.
Assume that 20 students registered for the course. Compute the probability that more than three will withdraw (to 4 decimals).
The number of traffic accidents that occurs on particular stretch roas during a month follows a Poisson distribution with mean of 8.5. Find the probability of observing exactly three accidents of this stretch of road next month.
based on our past history of winning bids on projects the probability of winning the next contract to build a school is
The response variable is the change in cholesterol level after two months of treatment. An analysis of variance will be used to compare the three treatments. What null hypothesis is tested by this ANOVA F-test?
The number of viewers of American Idol has a mean of 29 million with a standard deviation of 5 million. Assume this distribution follows a normal distribution.
Nursing program gives a qualifying exam to students applying for admission. The grades on the exam have a mean score of 80 with a standard deviation of 6. Describe the distribution of grades.
Rum that were sold and the number of churches that were built. What do you think the explanation for this correlation might be?
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