PRACTICE ANOTHER The following data represent crime rates per 1000 population for a random sample of 46 Denver neighborhoods.†63.236.326.253.265.332.065.066.368.935.225.132.554.042.477.5123.266.392.756.977.127.569.273.871.558.567.278.633.274.945.1132.1104.763.259.675.739.269.987.556.0154.285.577.584.724.237.541.1(a) Use a calculator with mean and sample standard deviation keys to find the sample mean x and sample standard deviation s. (Round your answers to one decimal place.)x = crimes per 1000 peoples = crimes per 1000 people(b) Let us say the preceding data are representative of the population crime rates in Denver neighborhoods. Compute an 80% confidence interval for μ, the population mean crime rate for all Denver neighborhoods. (Round your answers to one decimal place.)lower limit crimes per 1000 peopleupper limit crimes per 1000 people Compute a 95% confidence interval for μ, the population mean crime rate for all Denver neighborhoods. (Round your answers to one decimal place.)lower limit crimes per 1000 peopleupper limit crimes per 1000 people

Name: PRACTICE ANOTHER The following data represent crime rates per 1000 pop
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Description: PRACTICE ANOTHER The following data represent crime rates per 1000 population for a random sample of 46 Denver neighborhoods.†63.236.326.253.265.332.065.066.368.935.225.132.554.042.477.5123.266.392.756.977.127.569.273.871.558.567.278.633.274.945.1132

Given, data on crime rates for a randomly selected sample of 46 Denver neighborhoods. a.The steps…

Answered: The following data represent crime…

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PRACTICE ANOTHER

The following data represent crime rates per 1000 population for a random sample of 46 Denver neighborhoods.†

63.2	36.3	26.2	53.2	65.3	32.0	65.0
66.3	68.9	35.2	25.1	32.5	54.0	42.4
77.5	123.2	66.3	92.7	56.9	77.1	27.5
69.2	73.8	71.5	58.5	67.2	78.6	33.2
74.9	45.1	132.1	104.7	63.2	59.6	75.7
39.2	69.9	87.5	56.0	154.2	85.5	77.5
84.7	24.2	37.5	41.1

(a) Use a calculator with mean and sample standard deviation keys to find the sample mean x and sample standard deviation s. (Round your answers to one decimal place.)

x =	crimes per 1000 people
s =	crimes per 1000 people

(b) Let us say the preceding data are representative of the population crime rates in Denver neighborhoods. Compute an 80% confidence interval for μ, the population mean crime rate for all Denver neighborhoods. (Round your answers to one decimal place.)

lower limit	crimes per 1000 people
upper limit	crimes per 1000 people

Compute a 95% confidence interval for μ, the population mean crime rate for all Denver neighborhoods. (Round your answers to one decimal place.)

lower limit	crimes per 1000 people
upper limit	crimes per 1000 people

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