Use a standard normal table to obtain the areas under the normal curve described
ID: 2947222 • Letter: U
Question
Use a standard normal table to obtain the areas under the normal curve described below. Sketch a standard normal curve and shade the area of interest. a. The area either to the left of - 1.76 or to the right of 1.16 b. The area either to the left of 0.55 or to the right of 1.64 Click here to view page 1 of the normal distribution table, Click here to view page 2 of the normal distribution table, 1.76 1.16 1.76 1.16 1.76 1.16 1.76 1.16 The area either to the left of 1.76 or to the right of 1.16 is (Round to four decimal places as needed.) b. Which of the following graphs is correct? OA. 0.55 1.64 0.55 1.64 0.55 1.64 0.55 1.64 The area either to the left of 0.55 or to the right of 1.64 isExplanation / Answer
a) P(Z < -1.76 ) + P(Z > 1.16)
= P(Z < -1.76) + (1 - P(Z < 1.16))
= 0.0392 + (1 - 0.8770)
= 0.0392 + 0.1230
= 0.1622
Option - C is the correct curve.
b) P(Z < 0.55) + P(Z > 1.64)
= P(Z < 0.55) + (1 - P(Z < 1.64))
= 0.7088 + (1 - 0.9495)
= 0.7088 + 0.0505
= 0.7593
Option - C is the correct curve.
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