he number of square feet per house are normally distributed with an unknown population mean and standard deviation. If a random sample of 33 houses is taken to estimate the mean house size, what t-score should be used to find a 90% confidence interval estimate for the population mean?

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.