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1. In the Journal of the American Dietetic Association, it was reported that 54% of kids said that they had a snack after school. A random sample of 60 kids was selected, and 34 said that they had a snack after school. Use α = 0.01 to test the claim.
2. According to the American Pet Products Manufacturers Association, cat owners spend an average of $179 annually in routine veterinary visits. A random sample of local cat owners revealed that 10 randomly selected owners spent an average of $205 with s = $26. Is there a significant statistical difference at α = 0.01? Assume the population is normally distributed.
3. The mean salary of federal government employees on the General Schedule is $59,593. The average salary of 30 state employees who do similar work is 558,800 with σ = $1500. The sample data is normally distributed. At the 0.01 level of significance, can it be concluded that state employees earn on average less than federal employees?
Choose a product you are familiar with as a consumer. Answer the following. What type of demand patterns would that product have - cyclical, secular, seasonal, etc. or a combination of several types? Explain.
the probability that a car is red and has a white interior is 0.3. the probability that it is red is 0.7. the
in a linear programming problem the binding constraints for the optimal solution are5x1 3x2 302x1 5x2 20which of
Lauren Moore has sold her business for $500,000 and wants to invest in condominium units ( which she intends to rent) and land ( which she will lease to a farmer).
One of the 4 bus drivers is also randomly selected. Let Y denote the number of students on his bus. Compute the expectations and variances of X and Y?
john beale of stanford ca recorded the speeds of cars driving past his house where the speed limit read 20 mph. the
How many participants need to be enrolled in each group to achieve 80% power using a two-sided test with significance level =.05
Suppose that you're charged with comparing results of standardized tests from four different school districts. What statistical technique would you choose to use?
the probability that a military system is in an in-control condition is 0.96 and that it is in an out-of- control
an integrated circuit is connected to its frame by five wires. twenty-five samples of eight units were taken and the
In a certain county, 40% of registered voters are Democrats, 32% are Republicans, and 28% are Independents. Sixty percent of the Democrats, 80% of the Republicans, and 30% of the Independents favor increased spending to combat terrorism. If a..
Smokers don't live as long (on the average) as nonsmokers, and heavy smokers don't live as long as light smokers. You regress the age at death of a group of male smokers on the number of packs per day they smoked. The slope of your regression line
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