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Homework 07 (2)

# Homework 07 (2) - 7 True or False A sampling distribution...

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Unformatted text preview: 7) True or False: A sampling distribution is a distribution for a statistic. 7) True. Provide an appropriate response. 8) In one region, the September energy consumption levels for single —family homes had a mean of 8) :D 1050 kWh and a standard deviation of 218 kWh. Describe the center and spread of the sampling distrihgtion of the sample mean for a random sample of 50 single-family homes from this region. A) center: 1050, spread = 92.49 B) center:- 1050, spread— 61. 66 C) center— - 1050, spread: 4.36 @centers 1050 spread=30.83 Sampling Autumn..- at? ’“N— E) center-1050 spread: =218 36mph wan ﬂ: toso mum 2/“, tofu V". r 2 ‘8 5.3.; T— 3.1.3. =30u825. V\_= 50 17‘- ibO 9) The gestation time for humans has a mean of 266 days and a standard deviation of 25 days. If 100 9) 3 women are randomly selected, find the probability that they have a mean re an between 266 W- @1288! A) 0.2119 B) 0.7881 C) 0.517 ”:1“: P (we < i 4 2&8) , (7 .— “6—2“ __,H 21.3-2“. V" '00 - P2>-5. :-¢.<—'—' 1: 1,21. .3; be in am- enami—u :- 9 (o < -z < 0'8) n \1. 0* [an blow-m» i ‘3‘" 5'" Y :‘3(9_L°’E)‘ PQ‘Q I ' - — cub” . 0i “DVV‘ﬂA \$15 ‘1“‘0 Mao“ 54: UI‘ — o a 88' MGM 5/4 —-. ILL : 0'288 I :1 OE": / ____.__... ...
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