Asked Oct 24, 2019

A study group takes a practice statistics exam. They find that the group has a mean score of 80 with a Standard Deviation of 5. Lily has a z-score of 1.9 and wants to know her raw score. Calculate her score. 

the answer is Between 89.4 and 89.6

can you please show me the work, how do I find her score?


Expert Answer

Step 1

Standard normal distribution:

The standard normal distribution is a special case of normal distribution, in which the mean of the distribution ...


Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in



Hypothesis Testing

Related Statistics Q&A

Find answers to questions asked by student like you
Show more Q&A

Q: Will you show me step by step how to answer this, please?

A: Given Datan = 3p = 0.8X = 2Applying Binomial theoremProbability of x success out of n trial is given...


Q: A number resulting from the manipulation of raw data according to certain specified procedures is ca...

A: Parameter:Any statistical measure based on all units in the population or computable characteristic ...


Q: Finding Critical Values and Confidence Intervals. In Exercises 5–8, use the given information to fin...

A: (a)The provided values are:Sample size (n) = 25Sample standard deviation (s) = 0.24The formula to fi...


Q: When we collapse a scale into mutually exclusive classes and indicate the frequency associated with ...

A: Frequency distribution:Frequency of an interval is the number observations that fall in that interva...


Q: Find the mean of the data summarized in the given frequency distribution. 12) The highway speeds of ...

A: Mean for grouped data:The formula to find mean for grouped data is as follows:


Q: there is no statistically significant relationship between fear of crime and walking alone in your n...

A: Given statement is,There is no statistically significant relationship between fear of crime and walk...


Q: Pulse rates of women are normally distributed with a mean of 77.5 beats per minute and a standard de...

A: Given dataMean = 77.5Standard deviation = 11.5Formula to calculate z-score is given by


Q: Unrest and violence on one campus had decreased by 62% from 10 years ago. Four out of ten Americans ...

A: Population:The set of all subjects of interest can be termed as population.Sample:The subset of the ...


Q: A sample selected by taking the members of the population that are easiest to reach is called a ____...

A: Convenience samplingA sample that is made up by people that are easy and very convenient to reach is...