Ahotel chain has four hotels in oregon. the general manager is interested in determining whether the mean length of stay is the same or different for the four hotels. she selects a random sample of n = 20 guests at each hotel and determines the number of nights they stayed. assuming that she plans to test this using an alpha level equal to 0.05, which of the following is the correct critical value?
f = 3.04approximately f = 2.76t = 1.9917none of these.

A. what does the point (4, 122) represent? b. what is the unit rate? c. what is the cost of buying 10 tickets?

Name and describe the three most important measures of central tendency. choose the correct answer below. a. the mean, sample size, and mode are the most important measures of central tendency. the mean of a data set is the sum of the observations divided by the middle value in its ordered list. the sample size of a data set is the number of observations. the mode of a data set is its highest value in its ordered list. b. the sample size, median, and mode are the most important measures of central tendency. the sample size of a data set is the difference between the highest value and lowest value in its ordered list. the median of a data set is its most frequently occurring value. the mode of a data set is sum of the observations divided by the number of observations. c. the mean, median, and mode are the most important measures of central tendency. the mean of a data set is the product of the observations divided by the number of observations. the median of a data set is the lowest value in its ordered list. the mode of a data set is its least frequently occurring value. d. the mean, median, and mode are the most important measures of central tendency. the mean of a data set is its arithmetic average. the median of a data set is the middle value in its ordered list. the mode of a data set is its most frequently occurring value.

Which of the following statements would be sufficient to prove that parallelograms pqrs is a rectangle ?