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. Under older Federal Aviation Administration rules, airlines had to estimate the weight of a passenger as 185 pounds. (That amount is for an adult traveling in winter, and it includes 20 pounds of carry-on baggage.) Current rules require an estimate of 195 pounds. Based on data from the National Health and Nutrition Examination Survey, men have weights that are normally distributed with a mean of 172 pounds and a standard deviation of 29 pounds.
a. a. If 1 adult male is randomly selected and is assumed to have 20 pounds of carry-on baggage, find the probability that his total is greater than 195 pounds. Round your answer to three decimal places.
Sensitivity of 0.98 and false-positive rate of 0.01. Calculate and interpret meaning of PV+, if test is used in the population which has the disease prevalence of 0.001.
How is this relationship different from the bi-variate relationships?
Is the sample size large enough to construct a valid confidence interval for the proportion of debit cardholders who have used their card in making purchases over the Internet?
What is the numerical value of the sample proportion p^ ? The P-value is the probability of what event?
Descriptive statistics for given data - Evaluate the range, variance, and standard deviation of the data set. Interpret the results in the context of the real-life setting.
A study of cardiovascular risk factors compared heavy smokers, light smokers, and nonsmokers. Both men and women were included in the study so that the two factors are smoking level and gender.
Extrapolating this data by using the sum of squares method would further reveal any discretionary variances in relationship to the mean?
Identify the sample and population. Also, determine whether the sample is likely to be representative of the population.
An airline estimates that 98% of people booked on their flights actually show up. If the airline books 76 people on a flight for which the maximum number is 74
A travel agent suggests that since the law of averages makes it highly unlikely to have two plane crashes within a few weeks of each other, flying soon after a crash is the safest time. What do you think?
In the regards to a stem-and-leaf plot that best represents the given data, what would the stem be? Determine which stem would have the most leaves and explain what this means in terms of the GPA's.
Given that the pair of hypotheses that correspond to the claim are H0=500. Find the critical value for the hypothesis test.Assume that the level of significance is 0.02.
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