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16 articles trouvés pour ce sujet.

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	How can he raise his average to 90?		2015-12-29
		Raj pose la question : Harris has an 87 in a class where daily works count 20%, quizzes count 20% and tests count 60%. If there are only two test scores what must the score on his second test to raise his average to 90? Penny Nom lui répond.
	My final exam score		2015-06-19
		Deirdre pose la question : Hi, I got 69% on a question worth 20% 68% on a question worth 20% And the final exam was worth 60% My final grade overall was 63% Did I do very bad in the exam???? Penny Nom lui répond.
	Possible soccer scores		2012-10-09
		Riaan pose la question : Good day, I would like to know all the possible scores for a set of 5 soccer matches with no more than 5 total goals being scored in any match. Bearing in mind that there are three outcomes to every match. Win, Lose or Draw. Could you please help me with this? Kind regards Riaan South Africa Penny Nom lui répond.
	A normal distribution problem		2010-12-02
		Racquel pose la question : I am stuck on this question. I am not sure if using the z score will help me get the answer I need. Here is the question? The average length of time per week that students at this university spend on homework is normally distributed with a mean of 18 hours and a standard deviation of 3 hours. If Diane spends more time on homework each week than 75% of students, what is the minimum time she must spend? Penny Nom lui répond.
	t scores, z scores, standard scores and percentile ranks		2010-11-25
		Imogen pose la question : I have an assignment that requires me to calculate the t scores, z scores, standard scores and percentile ranks of 3 children on a vocab task. I am struggling with how to calculate the correct T-scores for the children, my tutor has said that the sample has a mean of 50 and standard deviation of 10. So on a z- score of 2.0 (2 SD's from the mean) it would be 50 + 10+10 = T score of 70. However the Z- scores i have are not whole numbers so I am struggling with it, i have one that is 1.27 , another that is 0.47 and the last one is 0.80. If you could help me on how to calculate these to get T scores that would be great. Thanks. Robert Dawson lui répond.
	The callaway system		2009-04-26
		Earl pose la question : Do you have a formula to enter players scores using the callaway system that calculate each player score after their score is entered? Victoria West lui répond.
	Z-score		2009-03-25
		Barb pose la question : I am having trouble finding information on a z score and the conversion to the number of standard deviations a z value can be away from the mean. What exactly does that mean and what am I looking for? Help Please. Harley Weston lui répond.
	Finding the Raw Score for a Mean of 0 and Standard Deviation of 1		2008-10-02
		Anita pose la question : A variable Y has a distribution of mean of Y =80 and standard deviation of Y=36. Find the values of A and B for transforming y*=A +BY so that mean of y* =0 and standard deviation of y*=1. Janice Cotcher lui répond.
	z-score		2008-07-23
		Sophia pose la question : Indicate whether the factor influences the numerator or denominator of the z-score and determine whether the effect would be to increase the value of z(farther from zero) or decrease the value of z(closer to zero). a. increase trhe sample size b. increase the population standard deviation c. increase the difference between the sample mean and the value of µ specified in the null hypothesis Janice Cotcher lui répond.
	z-score		2008-07-02
		Candace pose la question : If a normal-shaped distribution has a mean of 80 and a standard deviation of 15 what is the z-score for M=84 for a sample of n=25 scores. Is this sample mean in the middle 95% of the distribution? Harley Weston lui répond.
	Average Yearly Percentage Change		2008-01-10
		Ray pose la question : It's about average test scores over a three year span. If the scores were: 2005- 52.6% 2006- 42.5% 2007- 45.5% What is the average amount they changed each year in three years? Stephen La Rocque and Harley Weston lui répond.
	A weighted score		2007-06-05
		Cindy pose la question : We need to weight numbers differently in terms of a percentage calculation. One number {80 for example} at 65% and another number {100 for example} at 35%. How do we calculate these into one total grade for example. Penny Nom lui répond.
	Find her score		2007-05-01
		shelley pose la question : barb had 16 right answers and 5 wrong answers in the math competition. Find her score Jason had 27 right answers and 4 wrong answers in the math competition. find his score Penny Nom lui répond.
	On which assignment did I do better		2002-05-17
		Denise pose la question : I have 2 writing assignments in class. The first assignment, which had a mean of 10 and a standard deviation of 2, I got a score of 12. The second assignment had a mean of 18 and an s.d. of 3, I got a 21. I need to know which assignment did I do better, relative to my classmates? Andrei Volodin lui répond.
	Normal distribution		2002-01-21
		Danielle pose la question : A teacher gave a test on which the students' marks were normally distributed, but the results were pathetic. The mean was 52% and the standart deviation was 12%. The teacher decided that the top 10% of the students should get A's, the next 20% should get B's, the next 40% should get C's, the next 20% should get D's, and the bottom 10% should get F's. To the nearest percent, what are the cutoff marks that will result in an A, B, C, D, and F? Penny Nom lui répond.
	Two gross minus two score		2000-04-20
		Georgie pose la question : What is two gross minus two score? Chris Fisher lui répond.

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