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If the age of an initial cardiac incident (heart attack or sudden cardiac arrest) is normally distributed with a population standard deviation = 12 years, find the average age at which people will experience their first cardiac incident, given that 17% of all initial cardiac incident victims are younger than 50. Please, interpret the result.
Fair die is rolled 10 times. Determine the probability that the odd number (1, 3 or 5) will occur less than 4 times?
Construct a 95% confidence interval for the proportion of all those who experience some type of discomfort.
Use the binomial distribution formula to calculate the probability that a) out of 5 adults, none is concerned that employers are monitoring phone calls.
Plot a scatter diagram of the results with Depth of Water as the independent variable.
Perform a proper analysis. Describe your null and alternative hypothesis, report the p-value. What is your conclusion?
Below are scores for 10 randomly selected students on each exam. 95% confidence interval for the mean scores on?
Summarize the relationship between sample size and confidence level.
The diameters of oranges in a certain orchard are normally distributed with a mean of 5.26 inches and a standard deviation of 0.50 inches.
Using the original data, test at the 5% significance level that the population standard deviation of studying times is greater than 4 hours.
Obtain a test statistic and p -value assuming equal variances. Interpret these results.
By using the maximax criterion, what decision should be made by the decision maker?
At the 10% level of significance, is there sufficient evidence to indicate that more books are being loaned out per day, on the average?
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