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If one-person household spends the average of $40per week on groceries, determine the maximum and minimum dollar amount spent per week for middle 50% of one-person households. Suppose that standard deviation is$5 and variable is normally distributed.
It was reported that approximately 45% of all university professors are extroverted. Suppose you have classes with 6 different professors.
Use the five-step p-value approach to hypothesis testing and a 0.05 level of significance to determine whether the proportion of full-time students at Miami University is different from the national norm of 0.46.
Assume if the students toss the coin 200 times each about 68% should have proportions among what two numbers.
a) Test whether there is a difference between attitudes in the 2 cities. Use a 95% alpha. b) What does your result say about attitude consistency across cities?
Below is a plot of the Olympic gold medal winning performance in the high jump (in inches) for the years 1900 to 1996.
Construct a bar and pie chart to graphically display these data by using Microsoft excel.
Use Chebyshev's theorem to find what percent of the values will fall between 120 and 150 for a data set with mean of 135 and standard deviation of 7.5
In February 2002, the Argentine peso lost 70% of its value compared to the United States dollar. This devaluation drastically raised the price of imported products.
State the statistical assumptions of this test Using the data set you have selected, select independent and dependent variables.
Hypothesis test for the difference between two means - To make the data comparable, certain features, such as the deductible amount and limits of liability, are standardized.
The annual precipitation amounts in certain mountain range are normally distributed with a mean of 88 inches, and a standard deviation of 10 inches.
Multiple choices based on regression analysis - the percentage of variation in the dependent variable explained by the variation in the independent variable
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