The research conjecture is that students at your school average less than 8 hours of sleep a night.

(f) Translate the above statement to null and alternative hypothesis statements (Ho and Ha) (write out hypotheses in both symbols and in words)

. Use the Descriptive Statistics applet below to produce a graphical summary of the responses. Display the mean and standard deviation. Note: The dotplot rounds to the nearest .5 hours. Descriptive Statistics Specify data Choose statistics: format: Mean: Guess Actual Ostacked Median: Guess Actual includes header Std dev: Guess Actual Select data IQR: Guess Actual Choose C Show Percentages (for Paste data: guesses) Score 1.03 (n = 1.51 2.72 36) 3.02 Mean: 3.40 Select 6.886 3.40 observation SD: 3.40 3.40 Delete 6 8 10 12 1.520 4.53 SleepHrs Use Data Clear Select display type: Top/Bottom Dotplot OHistogram Sample size: 36 OTimeplot (one variable) Normal Probability Plot Random sample Add Boxplot