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A box contains 6 red and 9 green marbles. You reach in and remove 3 marbles all at once.
(a) Find the probability that these 3 marbles are all red. (Enter your answer as a fraction.)
(b) Find the probability that these 3 marbles are all of the same color. (Enter your answer as a fraction.)
If you sample 200 people and count the number who believe males should be granted paternity leave, is this number binomially distributed?
Five percent of the respondents gave $25,000 or more to charity over the previous year. Develop a 95% confidence interval for the proportion who gave $25,000 or more to charity.
Determine 80% confidence interval for average weights of Allen's hummingbirds in study regions. Determine the margin of error?
If the standard deviation of the price of meals in San Francisco was $10, determine the largest proportion of meal prices that could be larger than $50.
iq as measured by an intelligence test is scaled so that the mean in the population is 100 with a standard deviation of
1. Our hypothesis test is testing to see if there is a difference in the population mean between two groups. The data for each group has considerable variability. Given that there is considerable variability in the data for the two groups ________..
Super Markets, Inc. is considering expanding into the Scottsdale, Arizona, area. Ms. Luann Miller, Director of Planning, must present an analysis of the proposed expansion to the operating committee of the board of directors
a plastic casing for a magnetic disk is composed of two halves. the thickness of each half is normally distributed with
Determine whether each of the variables is qualitative or quantitative, and why? Determine if they are discrete or continuous, and why? Determine their level of measurement. Be sure that you understand the definitions of all data types and levels.
Find the standard deviation and variance from the (population) data below. Describe your results.
a pharmaceutical company conducted a study to evaluate the effect of an allergy relief medicine 250 patients with
the heat evolved in calories per gram of a cement mixture is approximately normally distributed. the population mean is
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