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Thickness measurements of ancient prehistoric native american pot shards discovered in a hopi village were approximately normally distributed with a mean of 5.1 mm and a standard deviation of 0.9 mm. for a randomly found shard, what is the probability that the thickness is
(a) less than 3.0 mm
(b) more than 7.0 mm
(c) between 3.0 and 7.0 mm
The probability that a new advertising campaign will increase sales is assessed as being 0.60. The probability that the cost of developing the new ad campaign can be kept within the original budget allocation is 0.50.
Calculate table T t . Calculate Computed T c .
The number of defects per foot Y is assumed to have a Poisson distribution with mean = 2. i) What is the probability of observing 3 defects in 4 feet of wire?
What do you find out when you perform the nonparametric statistics?
For each problem, compute a Welch F-statistic and determine whether or not significant differences exist among the treatment conditions.
A random sample of teachers from Georgia and an independent random sample of teachers from Indiana have been asked to report their mean annual income.
What is the probability that: The amount requested is $80,000 or more?
a sample of four tires is taken from a lot of brand-a tires. another sample of four tires is taken from a lot of
46. thirty percent of the population in a southwestern community are spanish-speaking americans. a spanish-speaking
the number of books checked out at a public library by a sample of eight primary school children were recorded6 4 5 7 5
Let X 1 , X 2 , X 3 , X 4 be a random sample from a Poisson distribution with parameter λ and let Y = X 1 + X 2 + X 3 + X 4 . You decide to test λ = 1.60 versus λ
An election coming up next week promises to be very close. In fact, assume that 50% are in favor and 50% are against. Suppose you conduct a poll of 791 randomly selected likey votes. Approx. how different will the percent in favor (from the poll) ..
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