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Validate the probability distribution
Determine the distributions given below represent a probability distribution. Justify your answer.
x
20
30
40
50
P (x)
0.3
0.2
0.1
0.4
Find the probability that in a given month:
Determine the 95% confidence interval for your estimate what data have you utilized as the basis of your predictions what suppositions have you made.
Here are the DMS odor thresholds for 10 untrained students:
He randomly samples 45 oil wells throughout the United States and determines the mean output to be 10.7 barrels per day with a standard deviation of 1.3 barrels. Test the researcher's claim at the .025 level of significance.
An automobile insurance company estimates the following loss probabilities for the next year on a $25,000 sports car:
Given the same significance level, a ________ value of t will be required to reject the null hypothesis compared to the value of z required for rejection.
Analyze the data using linear contrasts to make the following comparisons:
Find a 95% confidence interval for the difference in the proportion of deaths between the streptokinase and the control group.
When using the distribution of sample means to estimate the population mean, what is the benefit of using larger sample sizes?
High levels of cockpit noise in an aircraft can damage the hearing of pilots who are exposed to this hazard for many hours
If we fit the least-squares line to the 12 data points (one for each month) we obtain the following results from a software package. Notice that temperature is taken as the explanatory variable and crawling age as the response.
Scores on the Math Achievement Test form a normal distribution with a mean of u = 300 and a standard deviation of a = 100. What score separates the top 10% of the distribution from the rest.
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