The mean of racial tolerance among LAPD officers in a random sample of 30 officers is...

The mean of racial tolerance among LAPD officers in a random sample of 30 officers is 6.92 on a 9-point scale. The standard deviation is 1.5. Your hypothesis is that on average the mean tolerance is less than 5. Assume that mean tolerance in the universe under the null hypothesis is equal to 5.0. Which test do you use a t or z? What is the value of the test you chose?

Expert Solution

t test as SD for population is unknown

orchestra answered 2 years ago

A simple random sample of 30 items resulted in a sample mean of 30. The population...

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A random sample of size 30 from an exponential distribution with mean 5 is simulated. Show...

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A random sample of n=100 observations produced a mean of x⎯⎯=30 with a standard deviation of...

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A random sample of 20 observations is used to estimate the population mean. The sample mean...

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