Proportion of the dog owners
A survey found in a sample of 75 families, 26 owned dogs. A survey 15 years ago found in a sample of 60 families, 26 owned dogs. At ? = 0.05, has the proportion of the dog owners changed over the 15 year period?
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Assume that the committee must have one President which has to be a female and two ordinary members who should be males. How many different committees are possible?
A college dean of students services feels that this is too high for her university, so she randomly chooses 50 students and finds out that 40 of them employ credit cards. Using ? = 0.05, is she correct regarding her university?
For simple harmonic motion explained by trigonometric function, determine maximum displacement, frequency, value of d when t = 3, and least positive value of t for which d = 0.
Develop a 96% confidence interval to gauge whether there is difference in the proportion of men and women who are normal weight.
Determine total daily cost of producing x picnic tables. How many picnic tables can be made for the total weekly cost of $4, 800?
The planet's orbit follows the path described by 16x^2+4y^2=64. The comet follows parabolic path y=x^2-4. Where might comet intersect orbiting planet?
A random sample of 50 students' results found that they employed a mean of 476 cups with ? = 42 cups. At ? =0.01, is there sufficient evidence to conclude that the mean differs from 500?
Assume X is normal random variable with µ = 30 and s = 2. Determine the values of following probabilities. (Round your answers to four decimal places.)
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