User Account

All Pages

Assume that iq scores are normally distributed with a mean

Assignment Help Basic Statistics
Reference no: EM13621374

Assume that IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. If a sample of 70 people are selected, find the probability that the mean IQ score of the sample is greater than 102.

Reference no: EM13621374

Questions Cloud

A cold storage room has walls made of 023 m of brick on the : a cold storage room has walls made of 0.23 m of brick on the outside 0.08 m of plastic foam and finally 1.5 cm of wood
A computer repair service found that a random sample of 45 : a computer repair service found that a random sample of 45 repair costs had a mean cost of 659. assume that the
A motor bike battery manufacturer found that the life of : a motor bike battery manufacturer found that the life of their batteries is normally distributed with a mean life span
Find the direction and magnitude of the work done this : a cylinder is confined in a cylinder by a spring-loaded frictionless piston so that the pressure in the fluid is a
Assume that iq scores are normally distributed with a mean : assume that iq scores are normally distributed with a mean of 100 and a standard deviation of 15. if a sample of 70
Today you have 5120 to invest and want to have 572132 in 49 : 1. you want to have 1 million in your investment account in 17 years and estimate that you ran earn an 12 rate of
What your marginal federal tax rate what percent of your : 1. assume your marginal tax rate combined federal state and local is 34.1 percent. how many extra dollars must you earn
The average fuel to electric power efficiency of a coal : the united states produced 51 of its electric grid energy from coal fired power plants in 2001. this electricity from
If the bank wants to earn an 85 rate of return on its money : 1. you manage a loan portfolio at a local bank. one day you are approached by a jim riskind who is seeking an unsecured

Reviews

Write a Review

Basic Statistics Questions & Answers

  Describe the general shape of the distribution

Make (a) a frequency table, (b) a histogram, and (c) a frequency polygon. Then describe the general shape of the distribution.

  Finding the percentile

Scores on a test are normally distributed with a mean of 60.9 and a standard deviation of 12. Find P81, which separates the bottom 81% from the top 19%.

  Critical value for testing the population standard deviation

A doctor believes that the standard deviation of systolic blood pressure is 450. A random sample of 24 patients found a standard deviation of 520. Assume the variable is normally distributed and a = 0.01. What are the critical values?

  Back out the t-statistic for the test

My question bout How do I use the TINV function within excel to back out the t-statistic for the test? Why did you use the TDIST function? I know ho to use the TINV function, but what does it mean to back out the t-statistic for the test?

  Assuming that the food costs are normally distributed what

the mean amount spent by a family of four on food per month is 500 with a standard deviation of 75. assuming that the

  Computing z score for the sample data

Select the suitable hypothesis.H 0 : π ≥ .052; H 1 : π 0 if z

  Determine probability using multinomial distribution

A college student is taking 5 courses in a semester. He is willing to assume that he will get an A with probability 0.10, a B with probability 0.80, and a C with probability 0.1 in each of the courses. He defines X1, X2, and X3 to be the number of..

  Difference between measured values of two groups

Explain the relationship between sample size and the likelihood of a statistically significant difference between the measured values of two groups.

  Coefficient of determination and correlation

What does the coefficient of determination tell you about the variation in attendance and the variation in the number of exhibitors?

  Suppose 36 of these resistors are randomly selected to be

resistors to be used in a circuit have an average resistance of 200 ohms and a standard deviation of 10 ohms. suppose

  Determining confidence interval for true average

An article contained the following observations on degree of polymerization for paper specimens for which viscosity times concentration fell in a certain middle range.

  A sample of 850 people resulted in a confidence interval

1. for a standard normal model find the z-value that is less than the mean and for which 67 of the area under the

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

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