MTH 139 Test 2-versior Given the Z is the Standard Normal distibution, find the

Question

MTH 139 Test 2-versior Given the Z is the Standard Normal distibution, find the following peobabitinies 30. Find P(Z-1.45) (A) 0.0735 (B) 0.9265 (C) 0.4265 (D) 0.5735 (E) None of these Find/t-2.36 s z s-098) (A) 0.8274 (B) 0,8456 (C) 0.1726 (D) 0.1544 31. (E) None of these 32. Find P(Z s1.7) (A) 0.9554 (B) 0.4554 (C) 0.0446 (D) 0.5446 (E) None of these The results of a recent survey indicate that 71% of people in the US use multiple toppings on their hotdogs. Find the probability that in a random sample of 20 people, more than 16 of them will use multiple toppings on their hotdogs. (A)0.8744 (B)0.1256 (C) 0.7315 (D)0.2685 (E) None of these 33.

Explanation / Answer

Solution30:

P(Z>-1.45)

=P(Z<1.45)

From normal distribution table

P(Z>-1.45)=P(Z<1.45)

=0.9265

From Rcode also

pnorm(1.45)

= 0.9264707

ANSWER:0.9265

OPTION B

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