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A recent survey in the state of Texas stated that 23% of drivers on the freeways were carrying a gun. An anonymous questionnaire was sent out to 200 texans, and 50 responded that they carry a gun in their car. Is there evidence to support the survey? Let alpha= 0.01.
Estimate the mean number of cars per household for the population of households in the neighborhood. Give the 95% confidence interval.
Examining more than one independent variable. Would using several t-tests be appropriate test to use? If not, what would appropriate test be and why?
the fill volume of an automated filling machine used for filling cans of carbonated beverage is normally distributed
What is the predicted blood pressure for an average 17 year old as estimated from the regression line? And the standard error of the estimate for a 17year old ?
It is found that among a random sample of 130 of the school's students, 32% of them plan to go into general practice. Find the P-value for a test of the school's claim.
In the mid-1990s, Colgate-Palmolive had developed a new toothpaste for the U.S. market, Colgate Total, with an antibacterial ingredient that was already being successfully sold overseas.
The combined production level should not exceed 1200 units per month. The demand for product II is no more than half the demand for product I.
The mean SAT verbal score is 478, with a standard deviation of 98. Use the Empirical Rule to determine what percent of the scores lie between 380 and 478. (Assume the data set has a bell-shaped distribution)
I could reach my target of 2800 at each of the 5 bookies, making my total profit for the month 14000, or hit my target of -12000 for a total loss of 60000 x 25% kickback, making the total loss for the month only 45000.
A survey found that 85% of women in a given city enjoy shopping online. Suppose you randomly selected 6 women from the city and ask them whether or not they enjoy shopping online. Find the probability that exactly 4 say they enjoy shopping online.
Assuming that the distribution of the salaries is normal, what is the probability that the average for this sample is between $36,000 and $42,000.
Discuss the concept of 'extended family' with Asian and Latino ethnic minorities. Discuss the strengths and weaknesses regarding delivery of social and health services to these groups.
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