Use technology and a t-test to test the claim about the population mean mu at the given level of significance alpha using the given sample statistics. Assume the population is normally distributed. Claim: mu >77; alpha =0.05 Sample statistics: x overbar = 77.6, s = 3.7, n = 23 What is the value of the […]
The mean value of land and buildings per acre from a sample of farms is $1800 1800, with a standard deviation of $200 200. The data set has a bell-shaped distribution. Assume the number of farms in the sample is 80 80. (a) Use the empirical rule to estimate the number of farms whose land […]
Find the equation of the regression line for the given data. Then construct a scatter plot of the data and draw the regression line. (The pair of variables have a significant correlation.) Then use the regression equation to predict the value of y for each of the given x-values, if meaningful. The number of hours […]
The mean value of land and buildings per acre from a sample of farms is $1600, with a standard deviation of $300. The data set has a bell shaped distribution. Assume the # of farms in the sample is 70. Use the empirical rule to estimate the # of farms whose land and building values […]
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