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Test whether the mean rate is less than 6%. Use P-value approach.
A recent article in The Wall Street Journal reported that the 30-year mortgage rate is now less than 6 percent. A sample of eight small banks in the Midwest revealed the following 30-year rates (in percent):
4.8
5.3
6.5
6.1
5.8
6.2
5.6
At the .01 significance level, can we conclude that the 30-year mortgage rate for small banks is less than 6 percent? Estimate the p-value.
The standard deviation of the population of adult female height scores is 3 inches. A random sample of 50 women yields a mean height of 64 inches. Calculate the standard error of the mean.
Test hypothesis that calories of two populations are equal. Illustrate all steps of the hypothesis testing process. Points will be deducted for missing parts.
The trail was repeated 54 times with 22 correct identifications and 32 wrong identification.
What can one conclude about the librarian's hypothesis at a level of significance of .05?
The sample proportion of large gloves for each location is and . (Round your answers to 4 decimal places.)
Use value you found in part a to find out degree of confidence for interval 65.65
If there are 5 choices for a question and there is a 50% chance that the student knows the answer, what is the probability that the student knew the answer to a question he correctly answered?
Compute the sample variance and sample standard deviation as a measure of volatility of monthly total return for Chevron (to 2 decimals): Sample variance and Sample standard deviation.
Compute the mean, standard deviation, median, and standard error for each group.
In general, determine the standard score a measure of?
What is the value of the population mean? What is the best estimate of this value?
Explain the strength of relationship between the assets?
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