Question

POS Suppose a simple random sample of size 150 bobtained from a population whose seis N = 25,000 and white population proportion with specified characteristicis p.06. Complete parts(a) through (below. la Describe the sampling distribution of Choose the phrase that best describes the shape of the sampling distribution below O A Not normal because ns0.05N and pit-p<10 OB. Approximately normal because no.05 and np1-p10 OC. Approximately normal because ns05N and pl-210 OD Not normal becausen 0.05N and p1-10 Determine the mean of the samping dibution of Found to one decimal place as needed Determine the standard deviation of the sampling distribution of Type here to each

Answer 1

P=0.6, 1=150 9) Approximately normal because in 2005N and np (1:0) 210 upp =P=10.6 0.6 x 660-6) 0.04 op Px (1-P) 150 20.66 P-p 0.66.0.6 P PXC-P) 10-6*(1-06) 150 0.06 Plz 0.04 El-P/Zc 15 (using z table 1- 0.9332 0.0668

c) all (is 0.58) 0:58.0.6 duplo (PxG-0 0-6XC0.6) 150 "0.02 = PIZZ 0:04 =PLZE P(Z = -0.5) (using z table 0.3085