The mean of a set of data is 4.18 and its standard deviation is 2.14. Find the z

Question

The mean of a set of data is 4.18 and its standard deviation is 2.14. Find the z score for a value of 5.32 A) 0.54 B) 0.84 C) 0.48 D) Answer the question. If P(A) = 6/7 then find the odds against A happening. A 6:1 B) 1:6 C) 6:7 D) None of the above is correct. The probability that Luis will pass his statistics test is 0.97. Find the probability that he will fail his statistics test. A) 0.03 B) 0.49 C) 1.03 D) 32.33 Find the probability of correctly answering the first 3 questions on a multiple choice test if random guesses are made and each question has 5 possible answers. A) 5/3 B) 3/5 C) 1/125 D)1/243 In one town, 70% of adults have health insurance. What is the probability that 10 adults selected at randomfrom the town all have health insurance? A) 0.143 B) 0.7 C) 7 D) 0.028

Explanation / Answer

1 Question per post mate! Here goes the right answer:

Its a normal distribution, and params are given:

Mean =4.18
Stdev = 2.14

z for 5.32 = (5.32-4.18)/2.14 = .533

Answer is z= .533

Please check answer D) which is not printed, otherwise go for A

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