The mean weight of loads of rock is 430 tons with a

Assignment Help Basic Statistics
Reference no: EM13632539

The mean weight of loads of rock is 43.0 tons with a standard deviation of 8.0 tons. If 9 loads are chosen at random for a weight check, find the probability that the mean weights of those loads is less than 40.60 tons. Assume that the variable is normally distributed.

Reference no: EM13632539

Questions Cloud

A poll found that 41 of male voters and 44female voters : a poll found that 41 of male voters and 44female voters support a particular candidate.too test whether this candidate
The sample size necessary for a 98 confidence interval : 1. the sample size necessary for a 90 confidence interval to keep the maximum error to within 12 of a standard
What must the humidity ratio and mass flow rate of the : an office is occupied by 30 persons who each produce 200 btuh 58w of sensible heat and 0.25 lbh 0.1kgh of moisture. the
How much water is removed how much latent heat is removed : at a site at 5000ft 1500m air is cooled from 80f 27c dry-bulb temperature and 75f 24c wet-bulb temperature to
The mean weight of loads of rock is 430 tons with a : the mean weight of loads of rock is 43.0 tons with a standard deviation of 8.0 tons. if 9 loads are chosen at random
The date from survey sampling of fairfield connecticut : how easy is it to get into contact with a person in sacramento california? if you dont know the telephone number it
Medical treatment will cure about 87 of all people who : medical treatment will cure about 87 of all people who suffer from a certain eye disorder. suppose a large medical
To what pressure in atm should the air in the wind tunnel : a model of an airplane is to be tested at 20degc in a wind tunnel. the model is built to 112th scale. in order to match
A researcher needs to conduct a suitable nonparametric test : a researcher needs to conduct a suitable nonparametric test to compare two dependent variables. which of the following

Reviews

Write a Review

Basic Statistics Questions & Answers

  Find the interquartile range of the salaries

Suppose each employee in the company receives a $3000 raise for next year (each employee's salary is increased by $3000). The interquartile range of the salaries will

  Overall long-term tendency

Which of the following terms describes the overall long-term tendency of a time series?

  Multiple regression analysis produced regression equation

Multiple regression analysis produced following regression equation: Y' = 427.2 - 4.58X1 - 14.83X2 + 6.10X3. Which statement is right based on this analysis?

  Historical data suggests that a scientific journal accepts

historical data suggests that a scientific journal accepts 10 of the manuscripts it receives rejects 50 of the

  Developed the following frequency distribution on the age of

SCCoast, an Internet provider, developed the following frequency distribution on the age of Internet users. Find the mean, median, and the standard deviation.

  Probability that six or more claims will made by males

Claims involving automobiles are selected at random. What is the probability that six or more claims (x greater than or equal to 6) will be made by males under 25?

  Draw a fault tree for the system

Draw a fault tree for the system in which each event occurs only once and what is the next most likely component to inspect given the system fault tree.

  The mean gross annual income of certified welders are

the mean gross annual income of certified welders are normally distruted with the mean of 20000 and a standard

  The random variable x represents the number of cars per

the random variable x represents the number of cars per household in a town of 1000 households. find the probability of

  Examples of sampling method

To determine monthly rental prices of apartment units in San Francisco Bay area, samples were constructed in the following ways. Identify the technique used to produce each sample. (cluster, convenience, random, stratified, systematic):

  Probability of getting five-greater on exactly two of rolls

A fair, six-sided die is rolled 3 times. What is the probability of getting a 5 or greater on exactly two of the rolls? Example: According to the Facts 2006 webpage, 53% of UI students are men.

  Demand on the independent variable price

Run a simple regression of the dependent variable demand on the independent variable price and observe the coefficient on price.

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