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Question: A sensitive measuring device should not have a large variance in the errors of measurements it makes. A random sample of 41 measurement errors gives s2 = 102. Give a 99% confidence interval for the variance of measurement errors.
Throughout history 55% of registered voters actually have cast a ballot. What is the probability that among a group of 28 students who are registered voters more than 19 will vote?
Height of men have a mean of 69.6 inches and standard Dev of 2.8 inches. If 64 men are randomly seleted, find the probabilty that they have a mean greater than 70.6 inches.
Rock Paper Scissors is a simple game in which two players compete by simultaneously choosing rock, paper, or scissors.
The average particulate concentration, in micrograms per cubic meter, was measured in a petrochemical complex at 36 randomly chosen times- Is the histogram approximately normal?
Identify whether the following variables are numerical or categorical if numerical state whether the variable is discrete or continuous. if categorical state, whether the variable is nominal or ordinal.
The Starbucks in the Bauer College of Business found that 24% of customers purchase more than one cup of coffee per day from their shop. If 180 customers are randomly selected one day, what is the probability that no less than 25% of them purchase..
Find the proportion of the female references that are juvenile. Then transform this proportion to odds.- Do the same for the male references.
What is the probability that a randomly selected student will have a score of 80 or higher? If there were 97,680 students with scores higher than 91, how many students took the test?
a preliminary behavioral sutdy of the jingdong black gibbon a primate endemic to the wuliang mountains in china found
test null hypothesis: Meu=80 against alternative hpothesis=negative = 80 (alpha =.05). What does this tell you about meu?
Children per family for certain community from census data. Recognize random variable of interest, find out whether is a discrete or continuos, and write its possible values.
while walking along a railroad track in a daydream you are suddenly aware of a loud noise right behind you. what would
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