Determining the z values

Assignment Help Basic Statistics
Reference no: EM1319764

The accounting department at Weston Materials, Inc., a national manufacturer of unattached garages, reports that it takes two construction workers a mean of 32 hours and a standard deviation of 2 hours to erect the Red Barn model. Assume the assembly times follow the normal distribution.

a. Determine the z values for 29 and 34 hours. What percent of the garages take between 32 hours and 34 hours to erect?

b. What percent of the garages take between 29 hours and 34 hours to erect?

c. What percent of the garages take 28.7 hours or less to erect?

d. Of the garages, 5 percent take how many hours or more to erect?

Reference no: EM1319764

Questions Cloud

Continuous sampling since abnormal condition began : What is the probability that in a sample of 10 pieces: 5 or more will be defective?
Product market categories-marketing communications : Describe how marketing communications make products culturally relevant. Provide an example? Give an example where communications has not only helped brands to gain market share but fundamentally changed their product market categories?
Probability for defective random sample : Suppose 1.5 percent of the antennas on new Nokia cell phones are defective. For a random sample of 200 antennas, find the probability that:
Wiley and gemma-case study : Wiley and Gemma are neighbors. Wiley's lot is extremely large, and his present and future use of it will not involve the entire area. Gemma wants to build a single-car garage and driveway along the present lot boundary. Because of ordinances requi..
Determining the z values : Determine the  z   values for 29 and 34 hours. What percent of the garages take between 32 hours and 34 hours to erect?
Implication of culture and diversity : Why do leaders need to understand the implication of culture and diversity? Does building a learning organization add to being able to capitalize on this?
Probability using normal distribution-z score : What was the cost for the 10 percent of employees who incurred the highest dental expense?
Potential lawsuits : Martin, Barry, and Sims each have $4,000 to contribute toward an office supply business that they would like to start up. They are aware that there will be stiff competition in the business district where they will be opening.
Success factors for organisation : What are the key success factors for the organisation you work for (or another you know well) to achieve competitive advantage in the markets for its products/services?

Reviews

Write a Review

 

Basic Statistics Questions & Answers

  Z score on comparison distribution for sample score

Z score on comparison distribution for sample score and your conclusion. Suppose that all population are normally distributed.

  Fraction of the calls-probability distribution

What fraction of the calls last between 4.2 and 5 minutes?

  Probability distribution for the number of travelers

Develop a probability distribution for the number of travelers who plan their trips within two weeks of departure.

  Determining mean number of passengers

The mean number of passengers per flight is 160 with a standard deviation of 20. The aircraft used for the route has 200 seats.

  Explaining relationship between two variable by scatter plot

Create a scatter plot for those data. Based on scatter plot, how would you explain relationship between the two variable.

  Random sample of students

If the mean IQ of all Omega University students was equal to 115, and a small random sample of students was selected from the population whose mean IQ was 120, then this difference of 5 points would equal the:

  Sampling distribution of the difference

If two independent large samples are taken from two populations, the sampling distribution of the difference between the two sample means:

  Twotail test to claim average cottage cheese consumption

Which of following statements would be right concerning a twotail test at 0.05 level of significance? We can conclude that average cottage cheese consumption in America is at least 0.705 pound more or less than 2.75 pounds per person per year.

  Determining the null and alternate hypothesis

A professor of math refutes the claim that the average student spends 3 hours studying for the midterm exam. Which hypothesis is used to test the claim?

  Matched pairs and independent data sets

When is it important to have matched pairs rather than two independent sets of data?

  Homogeneity of variance assumption

For each of the following problems, assume that the homogeneity of variance assumption has not been met and that you will need to use the adjusted Welch statistic.

  Standard deviation of the population

This distribution is positively skewed. The standard deviation of the population is not known.

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