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Sun Love grapefruit growers have determined that the diameters of their grapefruits are normally distributed with a mean of 4.5 inches and a standard deviation of 0.3 inches. If a grapefruit is selected at random, what is the probability that its diameter
a. is at least 4.14 inches?
b. will be between 4.8 adn 5.04 inches?
The chance both flights are full is 0.6. Are the two flights being full independent events and What was the mean ranking for the females in this class
Currently, quarters have weights that are normally distributed with a mean of 5.670 g and a standard deviation of 0.062 g. A vending machine is configured to accept only those quarters with weights between 5.550 g and 5.790 g.
Last week I used a stopwatch to measure the echo time of my snare drum in the hall outside my classroom, which is 80 meters long. The average echo time was 10 milliseconds.
The mean SAT verbal score is 412, with a standard deviation of 90. Use the Empirical Rule to determine what percent of the scores lie between 412 and 592. (Assume the data set has a bell-shaped distribution.)
Please use the regression procedure within Excel under Tools > Data Analysis to construct this equation.
Suppose that sales of lemonade and sales of brownies are independent, determine standard deviation in his revenue.
Determine whether each of the distributions given below represents a probability distribution. Justify your answer.
Determine the coefficient of determination R 2 . Determine standard error of the estimate s e .
Compute Cronbach's alpha on the scale provided on pp. 710-711 of the Field text using the SAQ.sav file.
Find a 99% confidence interval for the population mean number of weekly miles.
Bags of tea are sampled to ensure proper weight. The overall average for samples is 8 ounces. Each sample contains 10 bags. The average range is 0.1 ounces.
A group of investors wants to develop a chain of fast food cafés. In determining potential costs for each facility, they must consider, among other costs, the average monthly cost of electricity.
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