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At a small Midwestern college, 60% of the students are female, 70% of the female students are liberal arts majors, and 50% of the male students are liberal arts majors. A student is selected at random to represent the school at a conference. The probability that the selected student is a liberal arts major is what?
Of the estimated natural gas reserves in North America, 4.59 *10^9 m ^3 are in United States. 2.66*10^9 m^3 are in Canada, and 1.99*10^9 m^3 are in Mexico.
Now they need your help to determine if the mean number of news shows watched in your neighborhood is similar to the national mean.
A steel pipe fittings company claims that the yield strength of its nontempered couplings is more variable than that of its tempered couplings. A random sample of nine tempered couplings has a standard deviation of 13.1 megapascals
Your fixed costs are presently $500,000 with a variable cost per unit of $25 per unit and a sales price of $43 Your options are: Increase your fixed costs by $50,000 which will decrease variable costs by $8 per unit.
Simulate 50 observations from a normal distribution with mean 0 and standard deviation 1. make a normal plot.
Test the given claim using the traditional method of hypothesis testing.
Standard deviations for first- and second-time and confidence interval
Conduct a hypothesis test using the .04 level of significance to determine if there is a difference between the population means.
Langewitz, Izakovic, and Wyler (2005) reported that self-hypnosis can significantly reduce hay fever symptoms. Patients with moderate to severe allergic reactions were trained to focus their minds on specific locations where their allergies do not..
A recent national survey found that high school students watched an average (mean) of 7.5 DVDs per month with a population standard deviation of .60.
If battery posts are larger than 3.5 centimeters or less than 3.30 centimeters, they will be scrapped. Determine the proportion scrapped?
Compute the mean, variance and standard deviation for the grouped data. Based on the previous answer, how much could the realtor expect to make if he sells 3 houses?
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