29. Hospital Emergency Waiting Times The mean of the waiting times in an emergency room is 80.2 minutes with a standard deviation of 10.5 minutes for people who are admitted for additional treatment. The mean waiting time for patients who are discharged after receiving treatment is 120.6 minutes with a standard deviation of 18.3 minutes. Which times are more variable?

Americans love ice cream .The annual per capita consumption of ice cream ,in pounds ,in the united states can be approximately by a normal distribution with mean 16.5 lbs and standard deviation 2.5 lbs  what percent of Americans eat less than 14 lbs of ice cream each year ?

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The playing life of a Sunshine radio has a Normal distribution with a mean of 600 hours and a standard deviation of 100 hours.   What percent of the time would you expect a radio to last no more than 600 hours?

How is standard deviation a measure of distance?

1.2, 2.7, 5.3, 3.4, 4.1,4.6, 3.3, 2.6. Find the standard  deviation

Which data set would be likely to have the larger standard deviation? Explain. * * Data set 1: Weights of all dogs at a golden retriever rescue shelter * Data set 2: Weights of all dogs for sale in a pet shop.

Explain what would happen if Person A scored lower than the mean of 70. Give an example exam score for that and calculate how many standard deviations Person A is above or below the mean

The results of a common standardized test used in psychology research is designed so that the population mean is 165 and the standard deviation is 10. A subject earns a score of 138. What is the Z-score for this raw score? Z-score = Add Work

A line for tickets to a broadway show had a mean waiting time of 20 minutes with a statistic deviation of 5 minutes. What Percentage of People in line waited for more than 28 minutes?