Question

In: Statistics and Probability

final exam scores in a mathematics course are normally distributed with a mean of 79 and...

final exam scores in a mathematics course are normally distributed with a mean of 79 and a standard deviation of 8. an exam score is 103 and the Z score is 3, what is the percentile

Solutions

Expert Solution

Given that,

By using standard normal table

  %


Related Solutions

(1 point) final scores in a mathematics course are normally distributed with a mean of 71...
(1 point) final scores in a mathematics course are normally distributed with a mean of 71 and a standard deviation of 13. Based on the above information and a Z-table, fill in the blanks in the table below.   Precision and other notes: (1) Percentiles should be recorded in percentage form to three decimal places.   (2) Note that this problem does not use the rough values of the 68-95-99.7 rule (that is, the empirical rule); instead you must use more precise...
A sample of final exam scores is normally distributed with a mean equal to 29 and...
A sample of final exam scores is normally distributed with a mean equal to 29 and a variance equal to 25. Part (a) What percentage of scores are between 24 and 34? (Round your answer to two decimal places.) Part (b) What raw score is the cutoff for the top 10% of scores? (Round your answer to one decimal place.) Part (c) What is the proportion below 23? (Round your answer to four decimal places.) Part (d) What is the...
A sample of final exam scores is normally distributed with a mean equal to 25 and...
A sample of final exam scores is normally distributed with a mean equal to 25 and a variance equal to 16. Part (a) What percentage of scares are between 21 and 29? (Round your answer to two decimal places) Part (b) What raw score is the cutiff for the top 10% of scores? (Round your answer to one decimal place) Part (c) What is the proportion below 20? (Round your answer to four decimal places) Part (d) What is the...
A sample of final exam scores is normally distributed with a mean equal to 24 and...
A sample of final exam scores is normally distributed with a mean equal to 24 and a variance equal to 25. Part (a) What percentage of scores are between 19 and 29? (Round your answer to two decimal places.) % Part (b) What raw score is the cutoff for the top 10% of scores? (Round your answer to one decimal place.) Part (c) What is the proportion below 18? (Round your answer to four decimal places.) Part (d) What is...
A sample of final exam scores is normally distributed with a mean equal to 26 and...
A sample of final exam scores is normally distributed with a mean equal to 26 and a variance equal to 16. (a) What percentage of scores are between 22 and 30? (Round your answer to two decimal places.) (b)What raw score is the cutoff for the top 10% of scores? (Round your answer to one decimal place.) (c)What is the proportion below 19? (Round your answer to four decimal places.) (d)What is the probability of a score less than 33?...
A sample of final exam scores is normally distributed with a mean equal to 23 and...
A sample of final exam scores is normally distributed with a mean equal to 23 and a variance equal to 16. Part (a) What percentage of scores are between 19 and 27? (Round your answer to two decimal places.) Part (b) What raw score is the cutoff for the top 10% of scores? (Round your answer to one decimal place.) Part (c) What is the proportion below 17? (Round your answer to four decimal places.) Part (d) What is the...
The final exam scores in a statistics class were normally distributed with a mean of 70...
The final exam scores in a statistics class were normally distributed with a mean of 70 and a standard deviation of five. What is the probability that a student scored less than 55% on the exam?
A set of final exam grades in ST2500 course is normally distributed with mean 70 and...
A set of final exam grades in ST2500 course is normally distributed with mean 70 and standard deviation of 8. (a) What is the probability of getting a grade of A(greater or equal 80) on this exam? (4) (b) What is the probability of that a student scored between 65 and 79? (4) (c) The probability is 10% that a student taking the exam scores higher than what grade?
Student scores on Professor Combs' Stats final exam are normally distributed with a mean of 72...
Student scores on Professor Combs' Stats final exam are normally distributed with a mean of 72 and a standard deviation of 7.5 Find the probability of the following: **(use 4 decimal places)** a.) The probability that one student chosen at random scores above an 77.   b.) The probability that 20 students chosen at random have a mean score above an 77.   c.) The probability that one student chosen at random scores between a 67 and an 77.   d.) The probability...
Student scores on Professor Combs' Stats final exam are normally distributed with a mean of 77...
Student scores on Professor Combs' Stats final exam are normally distributed with a mean of 77 and a standard deviation of 7.5 Find the probability of the following: **(use 4 decimal places)** a.) The probability that one student chosen at random scores above an 82. b.) The probability that 20 students chosen at random have a mean score above an 82. c.) The probability that one student chosen at random scores between a 72 and an 82. d.) The probability...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT