Question

Asimple random sample of size na 10 is obtained from a population with 66 and 19 (a) What must be true regarding the distribution of the population in order to use the normal model to compute probabilities involving the sample mean? Assuming that this condition is true, describe the sampling bution of () Assuming the normal model can be used determine Pox<89.6) (c) Assuming the normal model can be used determine PIX 268.3) (a) What must be true regarding the distribution of the population? O A The population must be normally distruted and the sample size must be large OB. The sampling dibution must be med to be normal O C. Since the sample size is large enough the population distribution does not need to be normal OD. The population must be normally buted Assuming the normal model can be used, describe the sampling stribution s the correct answer below. OA Normal, with ; 66 and 19 3. Normal, with an Gick to set your answer ASPETOIHIN 1 x N :

Answer 1

aiven 66 19 bption D the Population mist be ldistbud mpin distribution XMormd wiK U66 6= 1 To C ilorut option P (x69-6) -66 19/T0 P2 <0-599 =0.72 55 P(6-6 0-72 S5 c P(R683) 3-66 19/TO P(20382 8) 1-P(Z<O332s) E1-06491 O350g PC683)0-35 og