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A variable X follows a normal distribution with mean 43 and variance 144. We take a random sample of n individuals from this distribution and calculate the sample mean x ¯. What must the sample size be so that the standard deviation of the sample mean X ¯ is equal to 0.8.
An element E has a constant failure rate (lamda) and a reliability at time t of R(t)=p, if p=0.2 and 0.8, What is the effect on Rs(t), and basic reliability, serial MTBF, of adding additional elements to the series baseline system containing a sin..
The variable measuring how often the men attended Major League Baseball games with their spouse was significant at the 1% level, with the married men attending.
Use this information to construct a 95% confidence interval for the population proportion who sold unwanted gifts over the Internet
1. gas in a 1500 in3 cylinder at 2000 lbin2 gauge is reduced in volume to 1000 in3 while heated from 75degf to 250
What is the lower bound for the 99% confidence interval for the proportion of strikes that are critical strikes.
MSA Computer Corporation manufactures two models of minicomputers, the Alpha 4 and Beta 5. The firm employs 5 technicians, working 160 hours each per month, on its assembly line.
A mortgage department of a large bank is studying its recent loans. Of particualr interest is how such factors as the value of the home (in thousands of dollars), education level of the head of the household, age of the head of the household, curr..
As Los Angeles Laker Carl Perkins comes up for a seventh free throw, announcer Chick Hearn notes that Perkins had made the last six out of six free throws and concludes that "the law of averages starts working for Golden State" (December 15, 1990)..
sample proportion and probability based on normal distribution.a nationwide study in 2003 indicated that about 60 of
Clothing for Runners: Your company sells exercise clothing and equipment on the internet. To design the clothing, you collect a data on the physical characteristics of you different types of customers
Translate the following statements into symbolic form using capital letters to represent affirmative English statements.- It is not the case that either Tiger Woods and Maria Sharapova play professional football or Drew Brees and Serena Williams pl..
An electronics store provides the following data regarding the number of advertisements and the number of TV's sold during an eight week period. Develop a separate scatter diagram for each set of data (Week # vs. # of Advertisements and Week# vs. # ..
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