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1. Suppose an actuary for an insurance company knows that the life expectancy of people currently 30 years of age is 74 years (std = 7) for males and 77 (std = 8) for females. What percent of current 30-year-old men and women will die before the age of 81, respectively?
2. A psychologist has recently developed a test to measure the emotional intelligence of people. Based on the results of the pretest that sampled over hundreds of participants, the psychologist learned that the mean is 97 and the standard deviation is 12. What percent of people will fall between the score of 100 and 115?
The following table is from the Social Security Actuarial Tables. For each age, it gives the probability of death within one year, the number of living out of an original 100,000 and the additional life expectancy for a person of that age.
We will examine the association between the weight of the car (in thousand of pounds) and the fuel efficiency (in miles per gallon). Shown is the regression output.
In 2009, it was reported that 48% of teens found texting while driving very distracting. Test the hypothesis that there has been a rise in this proportion since 2009 using the α = 0.05 significance level.
Please discuss an application of ANOVA that might be undertaken in a workplace. What are the 3 or more treatments? What is the response variable?
Find a 95% confidence interval for the population mean selling price of all homes in this neighborhood.
a survey of 1305 people who took trips revealed that 96 of them included a visit to a theme park. based on those survey
the diameters of grapefruits in a certain orchard are normally distributed with a mean of 5.96 inches and a standard
How many salaries are in the top 1/3 (rounded to nearest whole number) for each group? What Comparatio value starts the top 1/3 of the range for each group? What is the z-score for this value? What is the normal curve probability of exceeding this sc..
Find, as Cardano did, the expected total without finding its distribution - Large prizes were given for large totals with a modest fee to play the game. Explain why this could be done.
Conduct a hypothesis test of to see whether the 2001 sample data indicate that the variability in interest rates has changed. Use . What is your conclusion?
two prison inmates communicate in binary by tapping on the adjacent wall. suppose that the probability of receiving a
In a study to determine frequency and dependency of color-blindness relative to females and males, people were chosen at random and the following results were recorded: Female Male
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