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Supposed that battery failure time, measured in hours, has a probability density function give by f(x)=2/(x+1)3. Compute the probability that battery lasts longer than 5 hrs?
The following table gives the approximate age distribution in the United States from the 2000 census.
Using a significance level of 0.05, perform a hypothesis test to see if the workers are right, and you need to hire more help. Write your hypotheses, calculate your test statistic and decide whether or not to reject your null.
Based on this data can the college conclude that the students in the new program performed better than the rest of the class> A one-tailed test is used equalling .05
Developing project network using AOA that determines completion times.
What is your decision regarding the null hypothesis and interpret.
what is the probability that a sample mean calculated from a sample of 100 individuals will have an average age between
Assume the population standard deviation (s) is 0.5 and the sample size (n) is 100. Calculate the values for alpha, a type I error and beta, a type II error. (To calculate Beta, consider a mean that is 1 standard error away from the lower end valu..
Of 900 consumers surveyed, 414 said they were very enthusiastic about a new home decor scheme. What is the 99% confidence interval for the population proportion?
find the value ofnbsptnbspfor the difference between two means based on an assumption of normality and this information
consider rolling two fair dice one green and one red. let r be the random variable which determines the face value of
a if fx is the probability density function pdf of a continuous random variable xwhat two conditions must be satised ?b
a new muscle relaxant is available. researchers from the firm developing the relaxant have done studies that indicate
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