**This is timed. Don't take longer than 2 hours to answer**

Question list K Explain what the symbols d and So represent. . . . O Question 1 What does the symbol d represent? O A. The mean of the differences between each data entry and the mean of the data entries Question 2 O B. The mean of the differences between the paired data entries in the dependent samples O C. The difference between a pair of data entries in the dependent samples O D. The difference of the means of the paired data entries in the dependent samples O Question 3 What does the symbol so represent? O Question 4 O A. The standard deviation of the data entries in the combined sample O B. The standard deviation of the difference between the means of the paired data entries in the dependent samples O Question 5 O C. The standard deviation of the differences between the paired data entries in the dependent samples O D. The standard deviation of the differences between each data entry and the mean of the data entries Question 6 Question 7Question list 0 Quest 0 Quest 0 Quest' 0 Quest' 0 Quest' 0 Quest' O Quest on1 on2 on3 on4 on5 on6 on? l A researcher claims that a postlunch nap decreases the amount of time it takes males to sprint 20 meters after a night with only 4 hours of sleep. The table shows the amounts of time (in seconds) it took for 10 males to sprint 20 meters after a night with only 4 hours of sleep when they did not take a postlunch nap and when they did take a postlunch nap. At or: 0.01, is there enough evidence to support the researcher's claim? Assume the samples are random and dependent, and the population is normally distributed. Complete parts (a) through (e) below. Male 1 2 3 4 5 6 7 8 9 10 :I Sprint time (without nap) 3.96 4.08 4.06 4.08 3.93 3.96 3.98 3.96 4.02 4.07 Sprinttime(with nap) 3.83 4.00 4.00 4.03 3.90 3.84 3.82 3.84 3.92 3.94 (a) Identify the claim and state HO and Ha. What is the claim? A postlunch nap decreases the amount of time it takes males to sprint 20 meters. A postlunch nap increases the amount of time it takes males to sprint 20 meters. A night with only 4 hours of sleep decreases the amount oftime it takes males to sprint 20 meters. POP"? A night with only 4 hours of sleep increases the amount of time it takes males to sprint 20 meters. Let Pd be the hypothesized mean of the difference in the sprint times (without nap -with nap). What are H0 and Ha? if} A. H0: pd 20 {:2 B. H0: pd =0 {:2 c. Ho: pd #0 Hazpd