Find quantities for the percentage of scores less

Assignment Help Basic Statistics
Reference no: EM13136147

Assume that a set of test scores is normallyh distributed with a mean of 110 and a standard deviation of 25. Use the 68-95-99.7 rule to find the following quantities.

a. the percentage of scores less than 110 is %.
b. the percentage of scores greater than 135 is %.
c. the percentage of scores between 60 and 135 is %.
(each answer should be typed in as a decimal or an integer)

Reference no: EM13136147

Questions Cloud

Determining evolution of supreme court : The constitution is rather vague about the make-up size and responsibility of the supreme court. How has the supreme court evolved over its history?
Company receivable management of selling its products : What are the implications for a company's receivable management of selling its products internationally?
Parkinsons'' law:the peter principle : Parkinsons' Law:the Peter PrincipleA. Please explain each concept in detail using OWN WORDS.
Does carol have any income as a result of the scholarship : Carol attends State University and received a $10,000 scholarship for her senior year that began in September, 2011. Up to the time of her graduation in May, 2012, Carol had paid the following expenses for the two semesters from her scholarship fu..
Find quantities for the percentage of scores less : Assume that a set of test scores is normallyh distributed with a mean of 110 and a standard deviation of 25. Use the 68-95-99.7 rule to find the following quantities. the percentage of scores less than 110 is %.
Calculate the number of moles of hydrogen : For the reaction given below at 700°C, Kc = 0.534. H2(g) + CO2(g) reverse reaction arrow H2O(g) + CO(g) Calculate the number of moles of H2 that are present at equilibrium
Prepaid expenses and accounts payable : A company had net income of $242,000. Depreciation expense is $26,000. During the year, accounts receivable and inventory increased $15,000 and $40,000, respectively. Prepaid expenses and accounts payable decreased $2000 and $4000, respectively. T..
Differences between texas-other states concerns federalism : One of the differences between Texas and other states concerns federalism. While some Americans are more comfortable with more power in the federal government, many Texans prefer leaving power to state and local governments.
What is the shape of the population distribution : What is the mean of the sample means? e. What is the shape of the population distribution? f. What is the shape of the distribution of the sample mean? How do I pay the $20.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Finding sample mean probability

A normal population has an average of 80 and a standard deviation of 10. You select a sample of 25. Calculate the probability that the sample mean

  Determine sample size to use for survey

From past estimates, manager thinks that about 4% of customers have expressed dissatisfaction. What sample size must you use for this survey?

  Simple regression model is likely to be in violation

If the residual plot, i.e., a graph in which the residuals for a particular regression model are plotted along with their associate value of x as an ordered pair, shows a parabolic pattern, which of the following assumptions of the simple regressi..

  Determine covariance matrix for values of process

Determine the covariance matrix for values of this process at time t=1,2,3,4. Determine its inverse(numerically) and write formula for pdf of corresponding random vector.

  True proportion for confidence level

In a sample survey, 200 of 800 individuals enrolled in our managed-care organization indicated that they favored a proposal to extend office hours from 5:00 to 8:00 p.m. Construct a 95% confidence interval for the corresponding true proportion.

  Find mean-standard error of sampling distribution

Find the mean/standard error of the sampling distribution of the proportion. Assume that 26% of students at a university wear contact lenses. We randomly pick 300 students.

  Find probability that murder are committed with a firearm

use the normal approximation to the binomial to determine what is the probability that: 100 or more murder are committed with a firearm? a. 0.452 b. 0.548 c. 0.367 d. 0.164.

  What standard deviation of the weights equal

f no more than 5% of the containers are to weigh less than 15.8 oz, what must the standard deviation of the weights equal?

  Descriptive statistics for original-transformed variables

Using the menu systems, request descriptive statistics (mean, s.d. and variance) for both your original variables

  Standard error of sample proportion

According to an article, 19% of the entire US population have high-speed access to the Internet. Random samples of size 200 are selected from the US population.

  Probability of student to have grade more than sixty

The grades of 20 students are listed in the stem and leaf diagram below. What is the probability of randomly selected student to have a grade more than or equal to 60 and less than or equal to 80.

  Apparent differences between the two companies

Plot the data on the same line and give your impression regarding any apparent differences between the two companies.

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