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The proportion of people in the United States who speak Spanish is about 0.11. The distribution of sample count speaking Spanish in samples of size 50 is somewhat right-skewed. Would the shape of the distribution of sample proportion speaking Spanish in samples of size 50 be less normal, more normal, or the same?
Consider only the winning times for men. Is there evidence of a linear trend? If so, propose a straight-line model for predicting winning time (y) based on year (x). Would you expect the slope of this line to be positive or negative?
compute the probability of being dealt at random and without replacement a 13-card bridge hand consisting of 13 cards
Compute the probability that a random sample of 50 infants born at full term results in a sample mean of less than 3500 grams.
PTC is a substance that has a strong bitter taste for some people and is tasteless for others. The ability to taste PTC is inherited. About 75% of Italians can taste PTC
Find the probability that a randomly selected student held either one or two jobs during the past year.- Find P(X > 0), the probability that a randomly selected student held at least one job during the past year.
If the true mean is 0.8 kN, what is the probability that the process will be shut down? This probability represents the chance of making one kind of error.
You are dealt 2 cards successively without replacement from a shuffled deck of 52 cards. Find the probability that the first card is a king and the second card is a queen.
question 1 a pizza shop owner wishes to find the 95 confidence interval of the true mean cost of a large pizza. how
suppose that there are a total of 16 students in an elementary school class. the teacher assigns each of the students a
Let X be a Gaussian random variable and let Y be a Bernoulli random variable with Pr(Y=1) = p and Pr (Y=-1)= 1-p.- If X and Y are independent, find the PDF of Z=XY.
The mean annual salaries paid to male and female employees of the company were EURO 32.000,- and 24.000,- respectively. Determine the percentage of males and females employed by the company.
According to recent research from the PewFoundation, 91% of all American adults have cell phones of some type. Use the statistics given to determine the approximate number of American adults who would find giving up their phone more difficult than..
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