Asoccer ball manufacturer wants to estimate the mean circumference of soccer balls within 0.05 in.
(a) determine the minimum sample size required to construct a 99% confidence interval for the population mean. assume the population standard deviation is 0.20 in.
(b) repeat part (a) using a standard deviation of 0.40 in. which standard deviation requires a larger sample size? explain.
(a) the minimum sample size required to construct a 99% confidence interval using a population standard deviation of 0.20 in. is balls. (round up to the nearest integer.)
(b) the minimum sample size required to construct a 99% confidence interval using a standard deviation of 0.40 in. is balls. (round up to the nearest integer.)
a population standard deviation of in. requires a larger sample size. due to the increased variability in the population, a sample size is needed to ensure the desired accuracy.

Astuntman jumping off a 20-m-high building is modeled by the equation h=20-5t^2, where t is the same in seconds. a high-speed camera is ready to film him between 15m and 10m above the ground. for which interval of time should the camera film him?

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.

Side xy of triangle xyz is extended to point w, creating a linear pair with ∠wyz and ∠xyz. measure of an exterior angle what is the value of x? 64 80 100 180