dave uses the associative property of multiplication to write an expression that is equivalent to 8 times 5 times b which expression did he write

Arandom sample of 15 observations is used to estimate the population mean. the sample mean and the standard deviation are calculated as 172 and 63, respectively. assume that the population is normally distributed. a. with 99 confidence, what is the margin of error for the estimation of the population mean? b. construct the 99% confidence interval for the population mean. c. construct the 95% confidence interval for the population mean. d. construct the 83% confidence interval for the population mean. hint: you need to use excel function =t.inv.2t to find the value of t for the interval calculation.

The equation for two lines in the coordinate plane are 2dx+y=4 and -6x+y=3, where d represents an unknown value. what value(s) of d would make these lines parallel?

Select the correct answer from each drop down menu a marketing company conducted a survey to assess the audience response to different aspects of a new advertisement. the company randomly chose 100 people to watch several advertisements of different lengths. the respondents were asked to note which ads they disliked. the table shows the survey results duration of ad number of viewers (seconds) who disliked ad 60 relationship between the duration of advertisements and the correlation coeficient for this data set is close to based on this information, we can conclude that there is a the audience dislong them reset next