Suppose that the times it takes adult women to run a mile are normally distributed with an unknown mean and standard deviation.
The mile times of 29 randomly sampled adult women are used to estimate the mean of the population. Use Excel to calculate the t-score that should be used to find the 95% confidence interval for the population mean. Round your answer to three decimal places.
Multiplying the x^3 term by 4 means it’s stretching it vertically, adding the minus sign means it’s flipping it about the x-axis, and subtracting 5 means it’s moving it down by 5 units.