removed incorrect hyphens (from old R version)

Author: trevorcampbell

source/inference.md

@@ -116,10 +116,10 @@ to rent. They need to create a budget, so they want to know something about
 studio apartment rental prices in Vancouver, BC. This student might
 formulate the following question:
 
-*What is the average price-per-month of studio apartment rentals in Vancouver, Canada?*
+*What is the average price per month of studio apartment rentals in Vancouver, Canada?*
 
 In this case, the population consists of all studio apartment rentals in Vancouver, and the
-population parameter is the *average price-per-month*. Here we used the average
+population parameter is the *average price per month*. Here we used the average
 as a measure of the center to describe the "typical value" of studio apartment
 rental prices. But even within this one example, we could also be interested in
 many other population parameters. For instance, we know that not every studio
@@ -1215,9 +1215,9 @@ Distribution of the bootstrap sample means with percentile lower and upper bound
 
 To finish our estimation of the population parameter, we would report the point
 estimate and our confidence interval's lower and upper bounds. Here the sample
-mean price-per-night of 40 Airbnb listings was
+mean price per night of 40 Airbnb listings was
 \${glue:}`one_sample_mean`, and we are 95\% "confident" that the true
-population mean price-per-night for all Airbnb listings in Vancouver is between
+population mean price per night for all Airbnb listings in Vancouver is between
 \$({glue:}`ci_lower`, {glue:}`ci_upper`).
 Notice that our interval does indeed contain the true
 population mean value, \${glue:}`population_mean`\! However, in