Answer Happy

For the remaining questions on the project, you will need to use the Distribution tools on your calculator. We will be working with more exact values than the Empirical Rule can give us. For all but one of the remaining questions you will need to do your work on paper and embed the picture of your work in the answer box. You will need to show 1) your sketch of the normal curve; 2) your calculator entry; 3) your probability notation; and 4) your final answer in a sentence. We will continue to use the information about average sleep per night for high school students, where we assume this normal model applies to all = 1.5. high school students and we use u = 7.2 and o=

Question 12 4 pts What is the probability that a randomly selected student averaged more than 8.3 hours of sleep on school nights? Round your answer to 4 decimal places. In the space below, embed a picture of your answer. Be sure to include:1) your sketch of the normal curve with appropriate labeling & shading (done by hand); 2) your calculator entry; 3) your probability notation; and 4) your final answer in a sentence. Edit View Insert Format Tools Table 12ptv Paragraph BI U ALT? :

Question 13 4 pts What amount of sleep would a student need to get in order to make their average amount of sleep "unusual?" Round your answer(s) to 2 decimal places. In the space below, embed a picture of your answer. Be sure to include: 1) your sketch of the normal curve with appropriate labeling & shading (done by hand); 2) your calculator entry; 3) your probability notation; and 4) your final answer in a sentences Edit View Insert Format Tools Table 12ptv Paragraph BI U ATV Tv

D Question 14 2 pts A student decides to do a research project based on the average amount of sleep high school students get on school nights. She decides to survey classes with 28 students and use a sampling distribution of sample means for samples of n=28. What will be the standard deviation she will use for her sampling distribution? Round your answer to 4 decimal places.