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Is the average number of television watched per evening in Australia less than in Britain? (Null and Alternative Hypothesis required). Is a one or two sided hypothesis test required?
The firm examined 35 randomly chosen fax transmissions during the next year, yielding a sample mean of 14.44 with a standard deviation of 4.45 pages. (a) At the .01 level of significance, is the true mean greater than 10? (b) Use Excel to find the..
let x denote the length in minutes of a long-distance telephone conversation. assume that the density for x is given
analyze the monthly returns for freddie mac since august 1 1989.step 1 download the monthly returns for freddie mac
you take a sample of 22 from a population of test scores and the mean of your sample is 60. a you know the standard
a sample of 60 students from a large university is taken. the average age in the sample was 22 years with a standard
Contains two black, six brown, and two blue socks, all randomly arranged. What is the probability that the two he draws are a matching pair?
The response times for the first month are 26, 30, 28, 29, 25, 28, 32, 35, 24, 23 min. Using the .05 significance level, did she keep her promise?
Suppose a one tailed t test is being applied to find out if the population mean is less than $120. The level of significance selected is 0.01 and 26 bank accounts were sampled.
A store asked 250 of its customers whether they were satisfied with the service or not. The responses were also classified according to the gender of the customers. We want to study whether there is a relationship between satisfaction and gender.
a particular pitching machine is manufactured so that it will throw the ball into the strike zone of a 6-foot batter 90
A sample of 25 provided a sample mean of 14 and a sample standard deviation of 4.32. What is the value of "t" for this sample? For a 95% confidence level, what is the critical value of "t"?
a sanitation department is interested in estimating the mean amount of garbage per bin for all bins in the city. in a
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