Sampling and x-bar distribution

Assignment Help Basic Statistics
Reference no: EM13113472

A Company produces candy on a production line. When operating properly, the production process will produce an average of u=140 pounds of candy per hour with a standard deviation of o=20 pounds of candy per hour. It is also known that the distribution is skewed left. In order to monitor the assembly process, 100 hours are randomly sampled and the number of pounds of candy produced is recorded. The sample mean number produced x-bar will be used to determine whether the production operation is working correctly.

-Can you explain to me how the sampling distribution of x-bar is generated theoretically and what would be the property(ies) of this x-bar distribution when the production is working properly?

-If the sample mean of the x-bar is 70 for the 100 hours...does this mean that the assembly is producing too few pounds of candy on average?

Reference no: EM13113472

Questions Cloud

Determine the limiting and excess reactant : Silicon Carbide is a hard substance used as an abrasive. it is prepared by heating SiO2 and carbon at high temperatures SiO2 + 3C = SiC + 2 CO determine the limiting and excess reactant.
What conclusion can be drawn based on level of confidence : If university officials say that at least 70% of the voting student population supporting the fee increase, what conclusion can be drawn based on a 95% level of confidence?
Hypothesis testing at five percent level of significance : A sample of 40 observations is selected from one somewhat normal population. The sample mean is 102 and the sample standard deviation is 5.
How large a sample required to reduce standard deviation : he standard deviation of the sample proprortion is 5.3%. How large a sample (to the nearest person) would be required to reduce this standard deviation to 3.7%?
Sampling and x-bar distribution : A Company produces candy on a production line. When operating properly, the production process will produce an average of u=140 pounds of candy per hour with a standard deviation of o=20 pounds of candy per hour.
What is the energy difference between the two quantum states : Green light of a wavelength 516 nm is absorbed by an atomic gas. What is the energy difference between the two quantum states involved in the transition.
Waiters report for work to minimize total staff required : How many waiters and busboys should report for work at the start of each time period to minimize the total staff required for one day's operation.
What is the molar heat of vaporization of benzene : The vapor pressure of benzene (C6H6) is 120 torr at 27.0C, and its normal boiling point is 80.1C. What is the molar heat of vaporization of benzene.
How many grams of o2 are required : Octane has a density of 0.692g/mL at 20 ^ C. How many grams of O2 are required to burn 1.10gal of C8H18.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Probability of a type one error-z test statistic

It is suspected that the mean turnover has changed and is not 6.0. Use the .05 significance level.

  Distribution of sample average-variability of distribution

Suppose investigators are interested in a population of patients who have been recently diagnosed with a particular kind of colon cancer (nonpolypoid colorectal neoplasm).

  What is the forecast for month 11

Evaluate 2-month moving average and Exponential smoothing by MAD.

  Statistics-sun love grapefruit

Sun Love grapefruit growers have determined that the diameters of their grapefruits are normally distrubuted with a mean of 4.5 inches and a standard deviation of 0.3 inches.

  Scatter diagram-sample correlation-coefficient determination

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

  Probability of being satisfactory

If she performs 15 demonstrations this week, what is the probability of her being satisfactory? What is the probability of between 4 and 8 (inclusive) orders?

  Describing parametric and nonparametric tests

There are many nonparametric tests that have been developed over the years. Explain what nonparametric tests are and why they were developed.

  Illustrate the maximum number of reservations

Illustrate the maximum number of reservations that it could accept for a flight with a capacity of 160, if it needs the probability of accommodating all reservation holders to be at least 95%.

  Normal distributions-distribution of sums

A straight rod is formed by connecting three sections A, B and C, each of which is manufactured on a different machine. The length of section A, in inches has a normal distribution with mean 20 and variance 0.04.

  Find difference between population variance-friedman test

Use Friedman test to find out whether there is evidence for significant difference between two population variance. Use .05 level of significance.

  American insurance-two- sample tests of hypothesis

The president of the American Insurance Institute wants to compare the yearly costs of auto insurance offered by two leading companies.

  Exponential distribution-expected value

The port of Trop can service only 1 ship at a time. However, there is mooring space for 3 more ships. Trop is a favorite port of call, but, if no mooring space is available the ships have to go to the next port.

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