![ghadeeraljelawy](/avatars/38396.jpg)
ghadeeraljelawy
03.12.2021 •
Mathematics
Suppose that scores on a particular test are normally distributed with a mean of and a standard deviation of . What is the minimum score needed to be in the top of the scores on the test? Carry your intermediate computations to at least four decimal places, and round your answer to one decimal place.
Solved
Show answers
More tips
- B Business and Finance How to Create a Business Plan? Your Ultimate Guide...
- F Family and Home Parquet or laminate, which is better?...
- L Leisure and Entertainment How to Properly Wind Fishing Line onto a Reel?...
- L Leisure and Entertainment How to Make a Paper Boat in Simple Steps...
- T Travel and tourism Maldives Adventures: What is the Best Season to Visit the Luxurious Beaches?...
- H Health and Medicine Kinesiology: What is it and How Does it Work?...
- O Other How to Choose the Best Answer to Your Question on The Grand Question ?...
- L Leisure and Entertainment History of International Women s Day: When Did the Celebration of March 8th Begin?...
- S Style and Beauty Intimate Haircut: The Reasons, Popularity, and Risks...
- A Art and Culture When Will Eurovision 2011 Take Place?...
Answers on questions: Mathematics
- M Mathematics plantea un problema cuya representación algebraica sea el sistema de ecuaciones dado, y resuelvo por el método de gauss......
- M Mathematics Which statement represents the biconditional statement of the conditional statements? if the measures of two angles have a sum of 90º, then the angles are complements....
- M Mathematics When evaluating the expression 37 - (23 +19) - 14, what should be entered into the calculator first?...
- M Mathematics What is 58,413,000,000 in scientific notations...
- P Physics Arock band playing an outdoor concert produces sound at 120 db 5.0 m away from their single working loudspeaker. ignore sound reflected from walls and other objects...
- M Mathematics Need help with worksheet it 19 question long it questions like this tell me who can help thanks...
- M Mathematics Please help me ASAP Please help me...
Ответ:
The minimum score needed to be in the top 5% of the scores on the test is 172.9.
Step-by-step explanation:
Problems of normally distributed samples are solved using the z-score formula.
In a set with mean and standard deviation , the zscore of a measure X is given by:
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
In this problem, we have that:
What is the minimum score needed to be in the top 5% of the scores on the test?
The 100-5 = 95th percentile, which is the value of X when Z has a pvalue of 0.95. So it is X when Z = 1.645.
The minimum score needed to be in the top 5% of the scores on the test is 172.9.
Ответ:
angle 1. 60
angle 2. 30
angle 3. 60
angle 4. 30
Step-by-step explanation: