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A nurse researcher found that the mean values of two groups on anxiety were different from each other with a p-value of 0.35 (alpha - 0.05). A nurse reading this finding knows that the researcher should decide that
there is not enough information to decide on statistical significance.the alpha level is too low.the results are not statistically significant.the results are statistically significant
4 prizes of $350, & 1 prize of $1000. Assume that 15,000 lottery tickets are issued and sold for $1.00. What is the lottery's expected profit per ticket?
Is there evidence that the population mean is above $300, if X (bar) = $305.11 and s = $43.20?
If 485 out of the next 500 orders are processed on the same day, would this prove that they are exceeding their goal, using α = .025?
A new process for producing synthetic diamonds can be operated at a profitable level only if the average weight of the diamonds produced by the process is greater than 0.5 karat.
Determine 80% confidence interval for average weights of Allen's hummingbirds in study regions. Determine the margin of error?
A sample of 49 observations is taken from a normal population. The sample mean is 55 and the sample standard deviation is 10. Determine the 99% confidence interval for the population mean.
The winning team's score in 13 high school basketball games was recorded. If the sample mean is 54.3 points and the sample standard deviation is 11.0 points, find the 98% confidence interval of the true mean.
The owner of a restaurant serving Continental-style entrees has the business objective of learning more about patterns of patron demand for the Friday to Sunday weekend time period.
The following table shows the hardness (in Brinell hardness numbers) and the tensile strength (in thousands of pounds per square inch) of ten specimens of a certain alloy.
Should we thus conclude that verbal praise tends to lower performance levels, whereas verbal criticism tends to raise them? Or is some other explanation possible?
The mean weight of trucks traveling on the the highway is unknown. A state highway inspector needs an estimated mean. He selects 49 trucks passing the weighing station and gets a mean of 15.8 tons
The mean for a sample of n=16 scores has an expected value of 50. This sample was selected from a population with a mean of µ=50.
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