suppose the test scores of a history class with 120 students are normally distributed with a...
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suppose the test scores of a history class with 120 students are
normally distributed with a...
if statistics test scores were normally distributed with a mean of 81 and a standard deviation...
if statistics test scores were normally distributed with a mean of 81 and a standard deviation of 4, a) what is the probability that a randomly selected student scored less than 70? b) what percentage of students had a B on the exam? c) the top 10% of the class had what grades?
Students across the U.S. take the ACT test, which has scores that are normally distributed with...
Students across the U.S. take the ACT test, which has scores that are normally distributed with a mean of 21 with a standard deviation of 5. If 250 students are randomly selected, what is the probability that at least 15 of them will score a 29 or better? A small college has an entering freshmen class of 600 students. Of these, 240 have brought their own personal computers to campus. A random sample of 110 entering freshmen was taken. What...
8. Suppose the scores of students on an exam are normally distributed with mean u = 17.6 and standard deviation o = 4.9...
8. Suppose the scores of students on an exam are normally distributed with mean u = 17.6 and standard deviation o = 4.9. (a) Determine the distribution of the sample mean score for a randomly selected sample of 36 students who took the exam. (b) Find the probability that the sample mean score will be less than 20 for a sample of 36 randomly selected students. (c) How large a sample size would be required to ensure that the probability...
In a recent year, the total scores for a certain standardized test were normally distributed, with...
In a recent year, the total scores for a certain standardized test were normally distributed, with a mean of 500 and a standard deviation of 10.6. Answer parts (a)dash(d) below. (a) Find the probability that a randomly selected medical student who took the test had a total score that was less than 488. The probability that a randomly selected medical student who took the test had a total score that was less than 488 is ?. (Round to four decimal...
In a recent year, the total scores for a certain standardized test were normally distributed
In a recent year, the total scores for a certain standardized test were normally distributed, with a mean of 500 and a standard deviation of 10.5.(a) Find the probability that a randomly selected medical student who took the test had a total score that was less than 490 (b) Find the probability that a randomly selected medical student who took the test had a total score that was between 497 and 511(c) Find the probability that a randomly selected medical student...
The IQ scores of college students are normally distributed with the mean of 120 and standard...
The IQ scores of college students are normally distributed with the mean of 120 and standard deviation of 10. If a random sample of 25 students is taken, what is the probability that the mean of this sample will be between 120 and 125. (49.38%)
In a recent year, the total scores for a certain standardized test were normally distributed, with...
In a recent year, the total scores for a certain standardized test were normally distributed, with a mean of 500 and a standard deviation of 10.3. Find the probability that a randomly selected medical student who took the test had a total score that was more than 527 The probability that a randomly selected medical student who took the test had a total score that was more than 527 is (Round to four decimal places as needed.)
In a recent year, the scores for the reading portion of a test were normally distributed,...
In a recent year, the scores for the reading portion of a test were normally distributed, with a mean of 22.6 and a standard deviation of 6.8 Complete parts (a) through (d) below. b. find the probability that a randomly selected high school student who took the reading portion of the test has a score that is between 17.3 and 27.9
PIQ (Pritchard’s Intelligent Quotient) scores are normally distributed with a mean of 120 and a standard...
PIQ (Pritchard’s Intelligent Quotient) scores are normally distributed with a mean of 120 and a standard deviation of 10.4. a. What is the probability that a person selected at random has a PIQ score greater than 135? b. What is the probability that an individual has a PIQ score between 104 and 126? c. The gifted program at Centereach High School accepts students with a PIQ score in the top 10% of the population. What PIQ score would a student...
In a recent year, the total scores for a certain standardized test were normally distributed, with...
In a recent year, the total scores for a certain standardized test were normally distributed, with a mean of 500 and a standard deviation of 10.3. Answer parts (a)dash(d) below. (a) Find the probability that a randomly selected medical student who took the test had a total score that was less than 492.
8. Suppose the scores of students on an exam are normally distributed with mean u = 17.6 and standard deviation o = 4.9. (a) Determine the distribution of the sample mean score for a randomly selected sample of 36 students who took the exam. (b) Find the probability that the sample mean score will be less than 20 for a sample of 36 randomly selected students. (c) How large a sample size would be required to ensure that the probability...
In a recent year, the total scores for a certain standardized test were normally distributed, with a mean of 500 and a standard deviation of 10.5.(a) Find the probability that a randomly selected medical student who took the test had a total score that was less than 490 (b) Find the probability that a randomly selected medical student who took the test had a total score that was between 497 and 511(c) Find the probability that a randomly selected medical student...
The IQ scores of college students are normally distributed with the mean of 120 and standard deviation of 10. If a random sample of 25 students is taken, what is the probability that the mean of this sample will be between 120 and 125. (49.38%)
In a recent year, the total scores for a certain standardized test were normally distributed, with a mean of 500 and a standard deviation of 10.3. Find the probability that a randomly selected medical student who took the test had a total score that was more than 527 The probability that a randomly selected medical student who took the test had a total score that was more than 527 is (Round to four decimal places as needed.)
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