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As a sample size approaches infinity, how does the student's t distribution compare to the normal z distribution? When a researcher draws a sample from a normal distribution, what can one conclude about the sample distribution? Explain.
With a mean of $8.90 and a standard deviation of $5.70. She waites on 30 parties. What is the probability that she will earn at least $350?
The weights of eggs produced on a farm are normally distributed with a mean of 1.4 ounces and a standard deviation of 0.4 ounces. How many 1200 eggs are within 2 standard deviations of the mean?
Five persons donate blood at the clinic on a particular day. Find the probability that at least one of the five does not have Rh+ blood.
Using the appropriate statistical procedure on the SPSS, test the between group means for a significant difference.
A journal polled its readers to determine the proportion of wives who, if given a second chance, would marry their husband again.
What proportion of children 10-15 years would be classified as hyperlipidemia(assume that hyperlipidemia is defined as a total cholesterol level over 200)?
Calculate the limits within which the weight of the packets should lie assuming that the machine is not been classified as faulty.
Can the value 0.64 be rejected if a survey of 495 homes in Omaha yields 332 with one or more lawn mowers? Use = 0.05.
What recommendation would you have for each state to maximize revenue? c. Which state was most likely to be following a political unsupportable policy?
Using the table below, compare and contrast the main differences between two quantitative research designs and two qualitative research designs.
In a recent national survey, the mean weekly allowance for a nine-year-old child from his/her parents was reported to be $3.65. A random sample of 45 nine-year-olds in northwestern Ohio revealed the mean allowance to be $3.69 with a standard devia..
How large sample should be selected in order to obtain p estimate with a bound of 0.08 on the error of estimation.
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