2. +--12 points \"KEStati 17.?.029 My Notes Consider a normal population with ?-
ID: 3055544 • Letter: 2
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2. +--12 points "KEStati 17.?.029 My Notes Consider a normal population with ?-39 and ?-5.8. Calculate the z-score for an x of 48.8 from a sample of size 10. (Give your answer correct to two decimal places.) You may need to use the appropriate table in Appendix B to answer this question. Need Help?Read ItTalk to Tuter o-n points JKESta1117 E.032. My Notes Kindergarten children have heights that are approximately normally distributed about a mean of 39.9 inches and a standard deviation of 2.9 inches. If a random sample of 32 is taken, what is the probability that the sample of kindergarten children has a mean height of less than 40.1 inches? (Give your answer correct to four decimal places.) You may need to use the appropriate table in Appendix B to answer this question. Need Help?RedTak to Tutor 4. 0-4 points JKEStati 17E037 My NotesExplanation / Answer
2
standard deviation = sigma/sqrt(n) = 5.8/sqrt(10)=1.834
z = (x - mean) /(standard deviation) = (48.8-39)/1.834 = 5.343
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