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According to the U.S. Bureau of Labor Statistics, 9.0% of working women who are 16 to 24 years old are being paid minimum wage or less. (Note that some workers in some industries are exempt from the minimum wage requirement of the Fair Labor Standards Act and, thus, could be legally earning less than the "minimum" wage.) A prominent politician is interested in how young working women within her county compare to this national percentage, and selects a simple random sample of 500 working women who are 16 to 24 years old.
Of the women in the sample, 55 are being paid minimum wage or less.
From these sample results, and using the 0.10 level of significance, could the politician conclude that the percentage of young working women who are low-paid in her county might be the same as the percentage of young women who are low-paid in the nation as a whole? Determine and interpret the p-value for the test.
A professor wants to compare the students' midterm and final exam results. For a random sample 10 students, the scores obtained are as follows. Find the sample correlation between the midterm and final examination results
Is research and development competition between two firms for a patent for a cure for lung cancer likely to satisfy the two components of the rent-seeking hypothesis? Why or why not?
The body temperatures of n = 130 healthy adults were measured (half male and half female). The average temperature from the sample was found to be = 98.249 with standard deviation s = 0.7332.
A 400-V DC shunt motor has ?eld and armature resistances of respectively 100 and 0.1 Ω. If the motor absorbs 40 kW from the electric grid, calculate the line, armature, and ?eld current.
Among those taking the Graduate Record Exam, 18 people are randomly selected.
In a certain population, 4% of people are color blind. A subset is to be randomlychosen. How large must the subset be if the probability of its containing at least one colorblind person is at least 95%?
The urinary fluoride concentration (parts per million) was measured both for a sample of livestock grazing in an area previously exposed to fluoride pollution and for a similar sample grazing in an unpolluted region
We can assign probabilities to values of using the normal density curve with mean 0.30 and standard deviation 0.023. Use this density curve to find the probabilities of the following events.
Draw a dotplot comparing the two data lists and explain how the plot shows that the standard deviation for List 1 is greater than the standard deviation for List 2.
A campus researcher wanted to investigate the factors that affect visitor travel time in a complex. multilevel building on campus.
a missile has a probability of 0.05 of penetrating enemy defenses and reaching its target. if ten missiles are aimed at
Martin Motors has in stock three cars of the same make and model. The president would like to compare the gas consumption of the three cars (labeled car A, car B, and car C) using four different types of gasoline.
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