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Unisys maintains a hurricane database which provides information on hurricanes in the Atlantic/ Caribbean/Gulf of Mexico and the Eastern Pacific Ocean. Unisys maintains a hurricane database which provides information on hurricanes in the Atlantic/ Caribbean/Gulf of Mexico and the Eastern Pacific Ocean. Maximum wind speeds in knots for a sample of hurricanes over the past four hurricane seasons are shown (Unisys weather website, April 2009). Atlantic/Carribean/Gulf of Mexico Eastern Pacific Ocean Storm Max Wind Speed Storm Max Wind Speed Frances 125 Darby 105 Jeanne 110 Frank 75 Lisa 65 Isis 65 Emily 135 Hilary 90 Ophelia 80 Max 70 Rita 150 Bud 110 Wilma 150 Daniel 130 Ernesto 65 Sergio 95 Florence 80 Cosme 65 Helene 105 Flossie 120 Dean 145 Henriette 75 Karen 60 Ivo 70 Use a .05 and test to determine whether the distribution of hurricane wind speeds is the same for these two regions. What is your conclusion?
Standard deviation of 100. The top 3% of students receieve $500. What is the minimum score you would need to receive this money? Calculate the z-score.
The probability that at least 5 children out of 10 in a sample taken from a school may have a blood level that may impair development is?
To select a _________ sample, an intact group of subjects that represent the population is selected.
The length of a particular telemarketing phone call has an exponential distribution with a mean equal to 1.5 minutes. Find the probability that the length of a randomly selected call will be between 30 - 50 minutes and 1 minuter or longer.
In addition, explain why it is important to ensure that your participants understand fully the extent of the research before you begin.
Describe the mean difference that is the main effect for the treatment. Describe the mean difference that is the main effect for gender. Is there an interaction between gender and treatment? Explain the answer
The National Survey of Student Engagement (NSSE) surveys freshmen and seniors about their level of engagement in campus and classroom activities that enhance learning.
Want a sample size of about 60 (30 controls and 30 cases). At 5% significance and 80% power.How do i determine the standard deviation and mean difference.And how do i arrive at the 60? my study design is case-control.
A local hardware store claims that the mean waiting time in line is less than 3.5 minutes. A random sample of 20 customers has a mean of 3.7 minutes with a standard deviation of 0.8 minute. If α = 0.05, test the store's claim.
If standard deviation is 50 hours and α is equal to 0.01, what values for mean x will result in rejection of null hypothesis.
How large a sample is needed to estimate the true proportion of home owners who have vegetable gardens to within 5 percentage points with 92% confidence?
what statement should be made about the null and alternative hypothesis based on sample data and significance level?
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