Find the probability that a student scores

Assignment Help Basic Statistics
Reference no: EM131429684

Suppose the average value on the final exam is 78% with a standard deviaton of 10%. Assume the exam scores are normally distributed.

1) Referring to Final Exam, find the probability that a student scores between 70% and 85%.

2) Referring to Final Exam, find the upper 10% of exam scores.

3) Referring to Final Exam, find a 90% confidence interval for students' exam scores, i. e., find an interval centered at 78 so that 90% of the exam scores fall within the interval.

Please do not just give me an excel spreadsheet with the answers like the last tutor did. I need someone to show me how to find these values, tell me what equations to use, etc.

Reference no: EM131429684

Questions Cloud

Write a procedure to implement a soft-fill algorithm : Write a procedure to implement a soft-fill algorithm. Carefully define what soft-fill algorithm is to accomplish and how colors are to be combined.
Would you choose job offer a or job offer b : Assume that you have to make a decision between two job offers that have comparable job assignments, nearly identical benefits packages, similar work environments, same advancement opportunities, and otherwise very similar. The major difference is..
Define a simple vector font for input to routine : Determine an appropriate value for the shear parameter by comparing intellect and plain text in some available font. Define a simple vector font for input to routine.
Discuss the major types of security mechanisms : Do some Internet research on the security implications of HIPPA requirements for hospital networks. Discuss the major types of security mechanisms that must be in place to ensure hospital compliance with HIPPA requirements
Find the probability that a student scores : Suppose the average value on the final exam is 78% with a standard deviaton of 10%. Assume the exam scores are normally distributed. 1) Referring to Final Exam, find the probability that a student scores between 70% and 85%.
Identify the advantages and limitations of 3d printing : Identify the advantages and limitations of 3D printing and scanning technology - These range from a limited use of materials to questions over whether the technology is feasible for short-run and long-run manufacturing.
Find the correlation coefficient of the data : 1. Suppose that you are given the following results. Find the correlation coefficient of the data: sx = 9.697,   sy = 16.100,   b = 1.310
Probability that the sample average : a) What is the probability that the sample average of the 16 textbooks is less than 3.5 pounds? (use 2 decimal places in your answer)) b) Imagine the distribution of all possible samples averages of textbook weights (with ). What is the weight th..
Discuss how anthropologists explain tribal warfare : Compare and contrast how the elderly are treated in foraging and industrial societies. What are the similarities and differences, and why do you think these are so

Reviews

Write a Review

Basic Statistics Questions & Answers

  Suppose that y1 y2 yn denote a random sample from an

suppose that y1 y2 . . . yn denote a random sample from an exponentially distributed population with mean?find the mle

  Is the standard deviation a resistant statistic

Remember that a resistant statistic is a numerical summary whose value is not unduly influenced by an outlier of any magnitude. Is the standard deviation a resistant statistic?

  Find probability that blood pressure lie in range

If an individual from this age group is selected, find the probability that his or her blood pressure will be between 70 and 95. Assume normal distribution.

  What circumstances would make choose alternative measure

Why would you choose this measure of central tendency? What circumstances would make you choose an alternative measure?

  You are a medical claims processor for humana claims arrive

you are a medical claims processor for humana. claims arrive at your desk at an average rate of three claims per day

  The mean and the standard deviation of the sample of 100

the mean and the standard deviation of the sample of 100 bank customer waiting times in table 1.8 are xbar5.49 and

  Literature review for empirical articles

Explain whether the authors used a population or a sample. Explain how this could have affected the results. If a sample was used, was it representative of the entire population? Why or why not?

  Assumptions of normality and homogeneity of variance

Describe the assumptions of normality and homogeneity of variance. When these assumptions are violated, what are your options? Are there cases in which the assumptions may technically be violated, yet have no impact on your intended analyses? Expl..

  Average campaign contributions of democrats

One-half of a sample receives an incentive in a mail survey. The other half does not. A comparison of response rates is desired.

  Find out the utility and the ratio of utility

If the payoff from outcome A is twice the payoff from outcome B, then the ratio of these utilities will be.

  Find one percentile is greater than thirty percentile

Indicate with Yes or No whether the given statement could apply to a data set consisting of 1,000 values that are all different. a. The 29th percentile is greater than the 30th percentile.

  Conduct the appropriate test and state your conclusions

A random sample of 21 employees with increased benefits yielded the following number of days spent off the job in one year: 5, 17, 1, 0, 2, 3, 1, 1, 5, 2, 7, 5, 0, 3, 3, 4, 22, 2, 8, 0, 1. Conduct the appropriate test, and state your conclusions.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd