A runner for team 1 can run a race in 54.6 seconds. Team 1 has running times with a mean of 52.1 seconds and a standard deviation of 2.09 seconds. A runner for team 2 can run a race in 53.7 seconds. Team 2 has running times with a mean of 51.2 seconds and a standard deviation of 3.53 seconds. Which runner is faster? (this is not a trick question...no statistics involved here) O runner for team 1 O runner for team 2 What is the z-score associated with the running time of runner for team 1? Round final answer to two decimal places.

Give the TI commands to find the mean, median, and standard deviation and compare to the original post when done by hand.  Mean = 14.1 + 6.4 + 9.6 + 21.2 + 16.8 + 2.2 + 6.0 = 76.3 / 7 = 10.9in. Median = 2.2, 6.0, 6.4, 9.6, 14.1, 16.8, 21.2 = 9.6in. How can I find the mean and median on TI caculator?

A golf pro claims that his mean golf score is 63. A sportswriter wants to test the claim that his mean score is higher 63. Would this be a left-tailed, right-tailed, or two-tailed test?

Four students take tests.  The results of each test for the class and the student are listed in the choice.  Which student has the highest Z Score? a.John who scored an 85 and whose class averages 77 with a standard deviation of 4. b.Tammy who scored an 86 and whose class averages 82 with a standard deviation of 3. c.Rob who scored an 87 and whose class averages 73 with a standard deviation of 11. d.Sandra who scored a 90 and whose class averaged an 81 with a standard deviation of 7.

Janet is planning to rent a booth at a festival for a day to sell clothes that she has made. She sells jackets for $204 and skirts for $165. Her past experiences suggests that sales of jackets will have a mean of 7.6 with a standard deviation of 1.9, and sales of skirts will have a mean of 11.3 with a standard deviation of 2.7. The cost of renting the booth for the day is $232. What are the mean and standard deviation of her net income? [Hint: you should first define random variables and use them to express her net income] O A. u= $3182.9, o = $3414.9 O B. µ= $3414.9, o = $590.51 O C. u= $3182.9, o = $590.51 Q D. p= $3182.9, o = $44.04 O E. p= $3414.9, o = $44.04

A student scores 74 on a geography test and 264 on a mathematics test. The geography test has a mean of 80 and a standard deviation of 5. The mathematics test has a mean of 300 and a standard deviation of 24. If the data for both tests are normally distributed, on which test did the student score better relative to the other students in each class? OA. The student scored better on the mathematics test. OB. The student scored better on the geography test. OC. The student scored the same on both tests.

Find the standard deviation for the following data set. ​2, 2,​ 2, 5,​ 5, 6,​ 6, 8,​ 8, 9   A. 2.49 B. 2 C. 5 D. 6.21   Which is the correct answer?

According to the U.S. Census, the average adult woman is the United States is 65 inches tall and the standard deviation is 3 inches.  If Zsike is 67 inches tall, what is her z-score?

The following data represents the number of blogs that a sample of students state they follow. 12, 3, 10, 9, 0, 1, 8, 7, 3, 10, 19 Calculate the standard deviation.

The highway mileage (mpg) for a sample of 8 different models of a car company can be found below. Find the mean, median, mode, and standard deviation. Round to one decimal place as needed. Use technology.20, 22, 26, 27, 29, 32, 33, 33Mean = Median = Mode = Standard Deviation =