What percent of students scored

Assignment Help Basic Statistics
Reference no: EM131725925

The scores on an exam are posted and the mean is 75 with a standard deviation of 5. Assuming the scores follow a normal-shaped distribution, use the 68-95-99.7 rule to determine each of the following:

Ted scored an 80, what percent of students scored higher than Ted?

What percent of students scored between 60 and 90?

If 70 is passing, what percent of the students passed an exam?

Reference no: EM131725925

Questions Cloud

Identify the challenges and potential issues : Identify the challenges and potential issues related to implementing the three goals above. Write a five pages report in Word format.
Compute a p-value : Assuming that the observations come from a normal distribution with mean µ, test H0: µ = .5 against HA: µ > .5 using a level .1 test. Compute a P-value?
Perform a hypothesis test : You are asked to perform a hypothesis test that population mean is greater than 75. Which of the following is the correct statement of the null and alternative
Calculate future value at end of specified deposit period : MGMT 2023 - FINANCIAL MANAGEMENT ASSIGNMENT. Calculate the future value at the end of the specified deposit period
What percent of students scored : Assuming the scores follow a normal-shaped distribution, use the 68-95-99.7 rule to determine each of the following:
Create a thread in response to the provided prompt : Create a thread in response to the provided prompt for each forum. Each thread must be at least 600 words and demonstrate course-related knowledge.
Confidence interval on the true population proportion : A marketing analyst wants to know the proportion of people who would be interested in purchasing his company new app, he took a random sample
How much national security is sufficient : Will people ever feel secure enough to stop implementation of advanced surveillance, detection, and inspection technologies on U.S. soil?
What are similarities of a formal and an informal work group : What are similarities and differences of a formal and an informal work group? What role does organizational culture play in level of success in a work group?

Reviews

Write a Review

Basic Statistics Questions & Answers

  Information about the spending plans of all adults

This confidence interval can't be trusted to give information about the spending plans of all adults. Why not?

  Probability of finding less substandard welds

Smith is a weld inspector at a shipyard. He knows from keeping track of good and substandard welds that for the afternoon shift 5% of all welds done.

  Technical concepts related to nuclear medicine

Explain the scientific and technical concepts related to nuclear medicine. Consider the following questions when you construct your response:

  Probability of lottery winnings

What is the probability you will win any money in the state lottery and the probability that you will win at least $100

  Find sample mean of amount citizens spend per year

Find the sample mean and sample standard deviation of the amount citizens spend per year. When finding a confidence interval for the true mean spent of ALL citizens, should we use a z-score or a t-score? Why?

  If jeff and jack each bowl one game then assuming that

jeffs bowling scores are approximately normally distributed with mean 160 and standard deviation 13 while jacks scores

  Hypothesis testing for population temperature

In order to monitor the ecological health of the Florida Everglades, various measurements are recorded at different times. The bottom temperatures are recorded at the Garfield Bight station

  Discuss the regression toward the mean phenomenon

When one of the five predictor variables in the preceding example is elimi- nated from the analysis, the value of R2 drops from 0.75 to 0.71. What does this tell us about the variable that was dropped?

  Determining likelihood of accepting a defective lot

Determine the likelihood of accepting a lot which is 1% defective?

  Cadets in the sample will form a normal distribution

The ages of the cadets in the sample will form a normal distribution.

  Assume that the mean hourly cost to operate a commercial

assume that the mean hourly cost to operate a commercial airplane follows the normal distribution with a mean of 2275

  Two questions i have two questions i need help with please

i have two questions i need help with. please show me how to obtain the answers. they are in the attachment. thank

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