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The null and alternate hypotheses are:
H0: μ1 ≤ μ2H1: μ1 > μ2
A random sample of 20 items from the first population showed a mean of 100 and a standard deviation of 15. A sample of 16 items for the second population showed a mean of 94 and a standard deviation of 8.
(a) State the decision rule for .05 significance level. (Round your answer to 3 decimal places.)
Reject H0 if t>
(b) Compute the value of the test statistic. (Round your answer to 3 decimal places.)
Value of the test statistic
(c) What is your decision regarding the null hypothesis? Use the .05 significance level."
Testing for a linear correlation. Construct a scatter plot, find the value of the linear correlation coefficient r, and find the critical values of r from the table below using a=0.05.
At a 5% level of significance, is there sufficient evidence that the population mean waiting time is now less than 3.7 minutes?
Interpret the interaction graph in terms of what it shows about the three effects tested.
Let R be a unique factorization domain then show that prime element R generates a prime ideal.
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Determine pearsons correlation coefficient and comment on the value obtained. Obtain a regression equation representing the above data. Estimate the production batch size for a direct labour cost of R350-00.
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A population is Normally distributed and has a σ =24. Samples of size 25 have a sample mean of 100. Find the 90% confidence interval for the population mean.
The data comes from a set of scores on a 50 point Bilogy 101 test. 90 subjects took the test. The scores range from 12-50. How to make a simple frequency distribution table, using the raw data?
A hypothesis is being conducted. The p-value was found to be 0.0768. For which of the following levels of significance will the null hypothesis be rejected?
What is the value of the test statistic? (Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places.)
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