Football air pressure during the national football league’s 2014 afc championship game, officials measured the air pressure on 11 of the game footballs being used by the new england patriots. they found that the balls had an average air pressure of 11.1 psi, with a standard deviation of 0.40 psi. assuming this is a representative sample of all footballs used by the patriots in the 2014 season, perform the appropriate test to determine if the average air pressure in footballs used by the patriots was significantly less than the allowable limit of 12.5 psi. there is no extreme skewness or outliers in the data, so it is appropriate to use the t-distribution.(a) clearly state the null and alternative hypotheses.

Astore manager records the total visitors and sales, in dollars, for 10 days. the data is shown in the scatter plot. what conclusion can the store manager draw based on the data? question 3 options: an increase in sales causes a decrease in visitors. an increase in sales is correlated with a decrease in visitors. an increase in visitors is correlated with an increase in sales.

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.

Isaac wants the equation below to have no solution when the missing number is placed in the box. which number should he place in the box?