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There are 652 males, 396 say they have been to dentist in past year. Give a confidence interval for 90% of the population proportion.
A social psychologist studied the effect of height on perceived overall attractiveness. Students were recruited to come to a research laboratory in pairs.
the following data represent the amount of sugar consumed in lbs. in a household during five randomly selected weeks.
Calculate harmonic mean for the following data. Size of items 50-60 60-70 70-80 80-90 90-100 No of items 12 15 22 18 20
What is the probability that the car is parked for less than 2 hours?- What is the probability that the car is parked for less than 1.4 hours?
Draw the standard normal distribution, label the axis, locate both z-scores on the axis (z7 = -1.5, z15 = 2.5), and shade an area equal to the probability that a randomly chosen croaker fish will be b/t 7 and 15 inches.
Records show that 13% of all college students are foreign students who also smoke. It is also known that 25% of all foreign college students smoke. What percent of the students at this university are foreign?
The Mega soft company gives each of its employees the title of programmer (P) or project manager (M). In any given year 70 % of programmers remain.
Find the margin of error for this poll if we want 95% confidence in our estimate of the percent of American adults who approve of cloning humans.
The National Institute of Mental Health published an article stating that in any one-year period, approximately 9.5 percent of American adults suffer
There are 40 multiple choice questions in a history test. For each question, there are 5 alterna- tives of which only one alternative is the correct answer.
What is the overall shape of this distribution? What does this shape say about word lengths in Shakespeare?
an automobile manufacturer claims that a new car model has a mean city gas mileage of 30 miles per gallon. the
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