The Statistic that tells the number of standard deviations a data value is above

Question

The Statistic that tells the number of standard deviations a data value is above or below the mean is called: a quartile. b. a percentile. c. a decile d. a z-score e. the variance. Given the following information, is value of P(A or B)? P(A) = .4 P(B) = .7 P(AB) = .3 a. .3 b. .4 c. .7 d. .8 e. 1.1 Suppose A and B independent events. Given the following information, what is the value of P(AB)? P(A) = .7 P(B) = .3 a. 0 b. .21 c. .3 d. .7 e. 1.0 Suppose a and B are mutually exclusive events. Given the following what is the value of P(AB)? P(A) = .7 P(B) = .3

Explanation / Answer

Solution:-

24) (d) The statistics that tells the number of standard deviation a data value is above or below the mean is called a z score.

25) (d) P(A or B) = 0.80

P(A or B) = P(A) + P(B) - P(A and B)

P(A or B) = 0.4 + 0.7 - 0.3

P(A or B) = 0.8

26) (b) P(AB) = 0.21

For independent events P(AB) = P(A) × P(B)

P(AB) = 0.7 × 0.3

P(AB) = 0.21

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.