Random samples of monthly rent prices, in dollars, for studio and one-bedroom apartments, were obtained for the Pennsylvania cities of Harrisburg and Philadelphia in July 2007. A 90% confidence interval for the difference in population means $\mu_\mathrm{H}-\mu_\mathrm{p}$ turns out to be (-$261.1, -$22.3).
-Determine the half-width of this interval.

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The Answer of Random samples of monthly rent prices, in dollars, for studio and one-bedroom apartments, were obtained for the Pennsylvania cities of Harrisburg and Philadelphia in July 2007. A 90% confidence interval for the difference in population means $\mu_\mathrm{H}-\mu_\mathrm{p}$ turns out to be (-$261.1, -$22.3).
-Determine the half-width of this interval.

Random Samples of Monthly Rent Prices, in Dollars, for Studio μH−μp\mu_\mathrm{H}-\mu_\mathrm{p}μH​−μp​

Random Samples of Monthly Rent Prices, in Dollars, for Studio $\mu_\mathrm{H}-\mu_\mathrm{p}$