Following is the probability distribution for the age of a student at a certain public high...
a6 Foreign-language study. Choose a student in a U.S. 12. public high school at random and ask if he or she is studying a language other than English. Here is the distribution of results: Language Spanish French German All others None 12 Probability 0.30 0.08 0.02 0.03 (a) Explain why this is a legitimate probability model. (b) What is the probability that a randomly chosen student is studying a language other than English? (c) What is the probability that a...
GED: In a certain high school, the probability that a student drops out is 0.05, and the probability that a dropout gets a high school equivalency diploma (GED) is 0.15. What is the probability that a randomly selected student gets a GED? Round your answer to four decimal places, if necessary.The probability that the randomly selected student gets a GED is _______
ne average age of doctors in a certain hospital is 43,0 years old. Suppose the distribution of ages s normal and has a standard deviation of 8.0 years. If 25 doctors are chosen at random for a committee, find the probability that the average age of those doctors is less than 43.8 years. Assume that the variable is normally distributed [6 marks) 14. A mandatory competency test for high school students has a normal distribution with a mean of 400...
1.) What is the probability that any randomly selected student (male or female) had a high school GPA between 3.00 and 4.00? Solve this problem using the Standard Normal Table (Z table). Show all work and provide the probability as a decimal rounded to four decimal places. 2.) If a female student had a high school GPA of 4.00, what percentile would this be for all female students? Solve this problem using the Standard Normal Table (Z table). Show all...
In a recent year, the scores for the reading portion of a test were normally distributed, with a mean of 23.7 and a standard deviation of 5.3. Complete parts (a) through (d) below. (a) Find the probability that a randomly selected high school student who took the reading portion of the test has a score that is less than 19. The probability of a student scoring less than 19 is (Round to four decimal places as needed.) (b) Find the probability that a randomly selected...
In a recent year, the scores for the reading portion of a test were normally distributed, with a mean of 21.6 and a standard deviation of 6.2. Complete parts (a) through (d) below. (a) Find the probability that a randomly selected high school student who took the reading portion of the test has a score that is less than 16 The probability of a student scoring less than 16 is? (Round to four decimal places as needed.) (b) Find the...
In a recent year, the scores for the reading portion of a test were normally distributed, with a mean of 20.2 and a standard deviation of 5.4. Complete parts (a) through (d) below. (a) Find the probability that a randomly selected high school student who took the reading portion of the test has a score that is less than 16. The probability of a student scoring less than 16 is . (Round to four decimal places as needed.) (b) Find...
Question 8 (1 point) d In a certain high school, the probability that a student drops out is 0.09, and the probability that a dropout gets a high-school equivalency diploma (GED) is 0.27. What is Write only a number as your answer. Round to four decimal places (for example: 0.2711). Do not write as a percentage.
The table shows the distribution, by age and gender, of 28.4 million people who live alone in a certain region. Use the data in the table to find the probability that a randomly selected person living in the region is a woman in the 15-24 age range. ges 15-24 25-3435-44 ges Ages Ages le emale 0.9 1.4 otal 5-24 274 Total 1.8 1.6 13.4 1.1 4.0 2.74.9 15.0 5 8.3 4.5 6.5 28.4 1.7 The probability that a randomly selected...
8. Twenty-four 9th- and 10th-grade high school girls were put on an ultraheavy rope- jumping program. The following data give the time difference for each girl before program time" minus "after program time) for the 40-yard dash 0.28 0.01 0.13 0.33 -0.03 0.07-0.18-0.14-0.33 0.01 0.22 0.29 -0.08 0.23 0.08 0.04 -0.30 -0.08 0.09 0.70 0.33 -0.34 0.50 0.06 Find a one-sided 95% confidence interval that is a lower bound for μD, the mean of the difference in race times