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Standard Normal Distribution. In Exercises 17–36, assume that a randomly selected subject is given a bone density test. Those test scores are
24. Greater than −3.05
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- Assume that adults have IQ scores that are normally distributed with a mean of µ = 105 and a standard deviation o=15. Find the probability that a randomly selected adult has an IQ less than 129. Click to view page 1 of the table. Click to view page 2 of the table. 0 The probability that a randomly selected adult has an IQ less than 129 is (Type an integer or decimal rounded to four decimal places as needed.) 29 14 8 F5 ► 11 % F6 A F7 & F8 00 = F9 * F10 √ F11 O (1,0) F12 T More PrtScr (8") + Insert Delete Rackspace PgUp Num Lock Next PgDn X Homearrow_forwardExample 10.9) Assume that the standard deviation o is 300 and n is 25. Calculate the standard error of the sample mean.arrow_forwardA population of scores has µ = 10 and σ = 2. If every score in the population is multiplied by 4, then what are the new values for the mean and standard deviation? Group of answer choicesarrow_forward
- A population of scores has μ = 25 and σ = 1. If 3 points are added to every score in the population, then what are the new values for the mean and standard deviation? a μ = 25 and σ = 1 b μ = 28 and σ = 1 c μ = 28 and σ = 3 d μ = 75 and σ = 3arrow_forwardWhat requirements are necessary for a normal probability distribe on to be a standard normal probability distribution? Choose the correct answer below. OA. The mean and standard deviation have the values of µ=0 and 1. OB. The mean and standard deviation have the values of u=0 and a=0. C. The mean and standard deviation have the values of u=1 and e=0. D. The mean and standard deviation have the values of u= 1 and e=1.arrow_forwardSuppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed with a mean of 250 feet and a standard deviation of 40 feet. Let X = distance in feet for a fly ball. Find the 80th percentile of the distribution of fly balls. Write the probability statement.P(X < k) =arrow_forward
- ) Approximate the mean and standard deviation for temperature.arrow_forwardneoM 7) The probability a student passes a class is 0.79. If 7 students are randomly selected, find the following: abnete a. The binomial probability distribution b. Give the shape of the PDarrow_forwardBirths are approximately uniformly distributed between the 52 weeks of the year. They can be said to follow a Uniform Distribution from 1 – 53 (spread of 52 weeks). Round all answers to two decimal places. A. The mean of this distribution is B. The standard deviation is C. The probability that a person will be born at the exact moment that week 29 begins is P(x = 29) = D. The probability that a person will be born between weeks 5 and 18 is P(5 < x < 18) = E. The probability that a person will be born after week 30 is P(x > 30) = F. P(x > 17 | x < 21) = G. Find the 40th percentile. H. Find the minimum for the upper quartile.arrow_forward
- Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw HillBig Ideas Math A Bridge To Success Algebra 1: Stu...AlgebraISBN:9781680331141Author:HOUGHTON MIFFLIN HARCOURTPublisher:Houghton Mifflin Harcourt