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Finding the value of test statistic and P-value also interpret the result.
In the year 2003 the mean fare to fly from Charlotte, North Carolina, to Seattle, Washington, on a discount ticket was $267. A random sample of round-trip discount fares on this route last month gives:
$321.00
$286.00
$290.00
$330.00
$310.00
$250
$270
$280
$299
$265
$291
$275
$281
At the .01 significance level can we conclude that the mean fare has increased?
What is the p-value?
An experiment was carried out to assess the effects of four tomato varieties and four planting densities on yield. There were 64 plots, and each of the 16 factor combinations was randomly assigned to 4 plots
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If it is determined that there is no difference between the population mean being represented by the sample and the mean of the population at large, then:
State in each of given cases whether you would expect relationship between given variables to be positive or negative or neither.
The simple coefficient of determination is the proportion of total variation explained by the regression line.
A noted psychic was tested for ESP. The psychic was presented with 400 cards face down and asked to determine if each card was marked with one of four symbols: a star, cross, circle, or square. The psychic was correct in 120 cases. Let p represent..
An SRS of 100 of a certain popular model car in 1993 found that 20 had a certain minor defect in the brakes. An SRS of 400 of this model car in 1994 found that 50 had the minor defect in the brakes. Let p1 and p2 be the proportion of all cars of t..
What is the probability that there will be more than three trucks either being loaded or waiting?
Perform a contingency analysis on the data to determine if there is any dependency between the number of level of education attained by the father and the size of his family.
Complete the table and answer the following questions. Use the .05 significance level.
Plot a scatter diagram of the results with Depth of Water as the independent variable.
An ANOVA procedure is used for data that was obtained from four sample groups each comprised of five observations. The degrees of freedom for the critical value of F are:
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