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40 observerations with a population standard deviation of 5 and a sample mean is 102. another 50 observation with a standard deviation of 6 and a sample mean of 6. conduct a hypothesis using the .05 significance level.
The theory underlying inferential statistics and other theoretical aspects are subjects we do not often consciously think about in our daily activities.
Determine the probability that person's monthly gasoline (gallon) purchases will be less than 67 gallons.
The cost of gasoline will decrease or stay the same over the next 30 days because of summer holiday travel. What is your alternative hypothesis statement?
Among 620 adults selected randomly from among the residents of one town, 18.9% said that they favor stronger gun-control laws.
The weight for a group of 18 month-0ld girls are normally distributed with a mean of 24.4 pounds and a standard deviation of 2.6 pounds. Use the table to find the percentage of 18 month-old girls who weigh more than 27.8 pounds.
Population standard deviation of 4 inches. For any one person selected at random, find out the probability that their height will be?
It is better to use the median rather than the mean for a distribution when:
Write down the name of 4 parts of the regression equation.
Random sample of round-trip discount fares on this route last month gives: At .01 significance level can we conclude that mean fare has increased? Determine the p-value?
What is the probability of winning if the rules are changed so that in addition to selecting the correct five numbers, you must now select them in the same order they are drawn?
Describe a real-life situation where Pascal's Triangle can be used to calculate probability. Is this the best method for solving your calculation?
Scores on a scholastic aptitude test are normally distributed with standard deviation σ=100 points. A group of 25 inner city high school students takes the test; their mean scores is x-bar = 440 points.
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