z score for .125

Charlie scored 70 out of 100 in a math test and Jake scored 75 out of 125 in another math test. Who between them scored better? => Charlie or Jake or Both the two or None of the above..

The scores on a certain standardized test are known to have a mean of 100 and standard deviation 25. A person will get a merit certificate if he scores above 125. What is the probability that a person taking this test receives a merit certificate? => 0.1587 or 0.6587 o..

If two samples have means of 24 and 28 and standard deviations of 4 and 6, with 12 and 15 as the sizes, find the z score for difference of two population means. => 2.07 or 7.73 or 1.07 or 1.93..

Find the z scores of three students who had a score of 93, 80, 84 in an examination for a pre-medicine course which has a mean of 84 and a standard deviation of 4. => 9, - 4, 0 or 23.25, 20, 21 or 2.25, - 1, 0 or - 2.25, 1, 0..

If two samples have means of 30 and 28 and variances of 12 and 14, with 20 and 25 as the sizes, find the z score for difference of two population means. => 2.154 or 2.075 or 2.320 or 1.857..

Recognize the incorrect statement(s). I. When all data for a variable are transformed into z scores, the resulting distribution will have a mean of 1 and a standard deviation of 0. II. The z score represents the number of standard deviations that a data value..

The reaction time to a stimulus for a certain drug has a mean of 2.5 seconds and a standard deviation of 0.3 seconds. Find the z score for a reaction time of 3.1 seconds. => 2 or 18.67 or 0.2 or 7.33..

The average number of pens sold by a shopkeeper in the first half and second half of a month are 315 and 300. If the standard deviations are 30 and 35, then find the z score value and verify the difference between both the means at 90% of confidence. => 0.106, both the means do ..

Two populations have means of 29.5 and 28 and variances of 6 and 7.8. If the sizes are 30 and 43, then find the z score values. Verify whether the mean of the first population is greater than that of the other at 99% of confidence or not. => 3.93, not greater or 0.57, greater or..

The average number of physically handicapped people in 25 sections of 2 colleges are 6 and 4 with standard deviations 1.2 and 1.5. Find out the z score value and verify if the mean number of PHC people differ in both the colleges at 99.73% level of confidence. => 0.2952, differ ..