Finding z-value according to a normal distribution

Assignment Help Basic Statistics
Reference no: EM1393225

Assume that a random variable, x, is distributed according to a normal distribution with mean 12 and standard deviation 2. Find the z-value if:

a. x = 11.8

b. x = 13.5

Reference no: EM1393225

Questions Cloud

Create an action potential in sodium conductance : Create an action potential and on the same graph inclde the changes in only the sodium conductance (gNa+). You can indicate the shape with solid line.
Statistical analysis of computer corporation : A statistical analysis of 1,000 long-distance calls made from the headquarters of the Bricks and Clicks Computer Corporation indicates that the length of these calls is normally distributed with μ = 240 seconds and σ = 40 seconds.
Real-world example of measure of central tendency : Give a brief description of a real-world example in which one measure of central tendency provides useful information while another measure of central tendency provides meaningless (or even misleading) information.
Explain central issues of role of federal government : Recognize and explain the central issues in debate over proper role of federal government in fostering economic development, explaining and protecting individual rights.
Finding z-value according to a normal distribution : Assume that a random variable, x, is distributed according to a normal distribution with mean 12 and standard deviation 2. Find the z-value if:
Expected return-standard deviation of portfolio : Compute the expected return and standard deviation of each of the two securities. Assume Miss Maple invested $2,500 in Security A and $3,500 in security B. Calculate the expected return and standard deviation for her portfolio.
Determine continuous random variables : A recent article suggested that if you earn $25,000 a year today and the inflation rate continues at 3 percent per year, you'll need to make $33,598 in 10 years to have the same buying power. You would need to make $44,771 if the inflation rate ju..
Why low-balling is effective persuasion technique : Explain why low-balling is the effective persuasion technique? How does dissonance reduction after the moral decision affect people's tendency to behave ethically or unethically in future?
Mean and standard deviation of final grades : The final grades for a random sample of MKT 380 students are as follows: What is the standard deviation for these data?

Reviews

Write a Review

Basic Statistics Questions & Answers

  Probability of stale doughnuts sold

Tom works the night shift at a gas station on the edge of Champaign. One night he mixed 3 stale doughnuts in with 13 fresh doughnuts. That night 6 customers bought one doughnut each, selecting them at random. What is the probability that at least ..

  Forecasting-the historical data, replicating the appropriate

The project requires you forecast the historical data, replicating the appropriate trends, seasonalities, week-over-week variability, etc.  Please refer to the chapter and materials on Forecasting for the procedures to do.

  The most common and serious type, called dmd

Muscular dystrophy is an incurable muscle-wasting disease. The most common and serious type, called DMD, is caused by a sex-linked recessive mutation. Specifically; women can be carriers but do not get the disease; a son of a carrier has probabili..

  Normal distributioin of university admissions test

Test scores on a university admissions test are normally distributed, with a mean of 500 and a standard deviation of 100. a) What is the probability that a randomly selected applicant scores between 425 and 575?

  Shipping schedule using transshipment model

Determine the most economical monthly shipping schedule. Provide a table showing the routes and total costs.

  Value of the population mean

What is the value of the population mean? What is the best estimate of this value?

  Determine the credit score values

The credit score of a 35 year old applying for a mortgage at Ulysses Mortgage Associates is normally distributed with a mean of 600 and a standard deviation of 100.

  Distributed random variable with a mean

The weight of a small Starbucks coffee is a normally distributed random variable with a mean of 370 grams and a standard deviation of 15 grams. Find the weight that corresponds to each event:

  Give reason for the probability distribution

Difference between the discrete and the continuous random variable.

  Gmat scores from a sample of applicants

The GMAT scores from a sample of 50 applicants to an MBA program indicate that none of the applicants scored below 450. A frequency distribution was formed by choosing class intervals 450 to 499, 500 to 549, and so on, with the last class having a..

  Dispersed distribution basics

In 2010, the average age of students at UTC was 22 with a standard deviation of 3.96. In 2013, the average age was 24 with a standard deviation of 4.08. In which year do the ages show a more dispersed distribution? Show your complete work and supp..

  X-bar and r chart

A Starbucks manager decides to study waiting times of customers for service at the lunch time rush hour 1100-1200. He observes three customers to measure the time the customer enters the line to the time he or she reaches the counter.

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