please help with question 3 l luss than 1.57 or greater than 1.8 4? 34 ar a stan

Question

please help with question 3

l luss than 1.57 or greater than 1.8 4? 34 ar a standardized normal distribution (with a mean of 0 an able E.2), what is the probability that b. Wha than a. Z is between -1.57 and 1.84? b. Z is less than -1.57 or greater than 1.8 c. What is the value of Z ible Z values are . d. Wh tion if only 2.5% of all possible Z values are larger? d. Between what two val ues of Z (symmetrically distributed around 9 Con the mean) will 68.26% of all possible Z values be contained? in 201 3 Given a standardized normal distribution (with a mean of 0 and a that th standard deviation of 1, as in Table E.2), what is the probability thatand th a. Zis less than 1.08? b. Z is greater than -0.21? c. Z is less than -0.21 or greater than the mean? d. Zis less than -0.21 or greater than 1.08? mo b. W 4 Given a standardized normal distribution (with a mean of 0 and a standard deviation of 1, as in Table E.2), determine the followitn probabilities: a. P(Z > 1.08) b. P(Z

Explanation / Answer

Ans:

3)

a)P(z<1.08)=0.8599

b)P(z>-0.21)=0.5832

c)P(z<-0.21 or z>0)=P(z<-0.21)+P(z>0)=0.4168+0.5=0.9168

d)P(z<-0.21 or z>1.08)=P(z<-0.21)+P(z>1.08)

=0.4168+0.1401

=0.5569

  

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