Assume the weight of groundhogs are approximately normally distributed, with a mean weight of 8.6 pounds, and standard deviation of 1.1 pounds. If you take a random sample of 5 groundhogs, what is the probability the sample mean will be less than 9 pounds? How would you shade the graph representing the scenario above? A) Right-tail including the mean B) Right-tail not including the mean C) Two-tails D) Left-tail including the mean E) Left-tail not including the mean F) Between two-tails OA OB OE OF

The mean GPA of all 45,038 students at Uneeda College is 3.21. A random sample of 50 GPAs from the school has a mean of 3.16. Is the value 3.21 a parameter or a statistic?

7. A set of data has a variance of 81. What is the standard deviation? SAMSUNG

8. An HP laser printer is advertised to print text documents at a speed of 18 ppm (pages per minute). The manufacturer tells you that the printing speed is actually a Normal random variable with a mean of 17.57 ppm and a standard deviation of 3 ppm. A Brother brand printer can print an average of 17.21 ppm and a standard deviation of 4 pages and its printer speed is also normally distributed. You select 10 of each printer at random. What is the probability that mean Brother print speed is at least 2 pages faster than the mean HP print speed?

Part I A bakery sells homemade bread by the loaf and sales are uniformly distributed between 200 and 600 loaves per day. a. Find the probability of selling 240 loaves on a given day. b. Find the probability of selling between 250 and 260 loaves per day Part II The golf balls produced by TruGolf have a mean distance of 250 meters and a variance of 625 meters. c. How large a sample of TruGolf balls should be taken if they want to estimate with 90% confidence the mean distance to within 8 meters? d A random sample of 40 balls from TruGolf are selected. Find the Bound of Error when the confidence level is 95% for TruGolf

The histogram (click the attacthed photo to view) shows the distribution of hurricanes that have hit a country from 1851 through​ 2015, where 1 is the weakest level and 5 is the strongest level.   A) The mean is? B) The variance is? C)The standard deviation is?

Using a pooled sample estimator, o , assumes the two populations have O A. different means. O B. the same mean. O C. the same variance. O D. different variances.

12) The distribution of weights of dogs in Fisherville is skewed left with a mean weight of 25 pounds. Which of the following is more likely, selecting an SRS of 70 dogs in Fisherville that have a mean weight under twenty-pounds or  selecting an SRS of 140 dogs in Fisherville that have a mean weight under twenty-pounds?