The mean mark on a provincial standardized test is 66 with a standard deviation of 5, following a normal distribution. What is the probability that a given student will not achieve a passing mark of at least 50?
The mean mark on a provincial standardized test is 66 with a standard deviation of 5,...
Given a standardized normal distribution (with a mean of O and a standard deviation of 1), complete parts (a) through (d) below. Click here to view page 1 of the cumulative standardized normal distribution table Click here to view page 2 of the cumulative standardized normal distribution table. a. What is the probability that Z is between - 1.54 and 1.88? The probability that Z is between - 1.54 and 1.88 is .9061. (Round to four decimal places as needed.)
Given a standardized normal distribution (with a mean of 0 and a standard deviation of 1) complete parts (a) through (d) below. Click here to view page 1 of the cumulative standardized normal distribution table, Click here to view page 2 of the cumulative standardized normal distribution table. a. What is the probability that Z is between 1.57 and 1.83? - The probability that Z is between 1.57 and 1.83 is (Round to four decimal places as needed.) particular train...
Given a standardized normal distribution (with a mean of O and a standard deviation of 1), complete parts (a) through (d). 5 Click here to view page 1 of the cumulative standardized normal distribution table. E: Click here to view page 2 of the cumulative standardized normal distribution table. The probability that Z is less than 1.51 is 0.9344. (Round to four decimal places as needed.) b. What is the probability that Z is greater than 1.89? The probability that...
27. On a standardized test with a normal distribution, the mean was 64.3 and the standard deviation was 5.4. What is the best approximation of the percent of scores that fell between 61.6 and 75.1? 28. The mean of a normally distributed set of data is 52 and the standard deviation is 4. Approximately 95% of all the cases will lie between which measures? 29. Battery lifetime is normally distributed for large samples. The mean lifetime is 500 days and...
Given a standardized normal distribution (with a mean of 0 and a standard deviation of 1), complete parts (a) through (d). a. What is the probability that Z is less than 1.03? b. What is the probability that Z is greater than −0.26? c. What is the probability that Z is less than −0.26 or greater than the mean? d. What is the probability that Z is less than −0.26 or greater than 1.03?
Given a standardized normal distribution (with a mean of O and a standard deviation of 1), complete parts (a) through (d). Click here to view page 1 of the cumulative standardized normal distribution table. Click here to view page 2 of the cumulative standardized normal distribution table. a. What is the probability that Z is less than 1.05? The probability that Z is less than 1.05 is 8289 (Round to four decimal places as needed.) b. What is the probability...
given a standardized normal distribution(with a mean of 0 and a standard deviation of 1) complete parts a through d below. what is the probability that z is between - 1.56 and 1.86, what is the probability that z is less than -1.56 or greater than 1.86, what is the value of z if only 1% of all possible z values are larger
Given a standardized normal distribution (with a mean of 0 and a standard deviation of 1, as in Table E.2), what is the value of A that would satisfy, P(Z < A) = 0.102
Students taking a standardized IQ test had a mean score of 100 with a standard deviation of 15. What is the lowest score that would still place a student in the top 15%?
Given a standardized normal distribution with mean - 0 and standard deviation 1: d. What is the Z value that corresponds to a cumulative probability (from -oo to Z) of 0.3368? e. What is the Z value that corresponds to a cumulative probability (from -oo to Z) of 0.5832? f. What is the Z value that corresponds to a cumulative probability (from -oo to Z) of 0.7500? g. What is the Z value that corresponds to a cumulative probability (from...