How should we interpret our results?

For the following 6 questions, use this information: A medical investigation claims that the number of infections per week at a hospital is 16.3. A random sample of 10 weeks had a mean number of 17.7 infections. The sample standard deviation is 1.8 and the significance level is 0.05. What is the null hypothesis?

The sample coefficient of correlation does not have which property?

In a statistical test, we

Calculate the standard error of the mean for a finite population with  σ = 2 . 5 , N=1000, and n=100

Which of the following stains will not stain the mucoid capusule of Cryptococcus neoformans?

An economist is interested in studying the incomes of consumers in a particular region. The population standard deviation is known to be $1,000. A random sample of 50 individuals resulted in an average income of $15,000. What is the upper end point in a 99% confidence interval for the average income?

What is the correct decision regarding the hypotheses?

Given the ordinary least squared regression line y=2.48-1.63x, the slope is

Which is not an assumption of least squares regression?