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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?
the number of vehicles arriving at a toll booth per minute were observed as0 3 1 2 0 1 1 1 2 0 1 4 3 1 1 0 0 1 0 2 2 0
customers arrive at a two-chair shoeshin stand at the rate of 10 per hour. the average duration of a shoeshine is 6
you are a manager of a 7-eleven. you have determined the probability a customer buys gasoline 0.32. you have also
When the rats In the sample reach 10 weeks old, each rat is weighed. The mean weight for this sample is M=974. Sketch the appropriate distribution, and locate the critical region for the alpha level =.05.
calculate the Pearson product-moment correlation coefficient and test for significance at the .01 level and calculate a t-test and test for significance at the .05 level, 2-tailed level of significance.
The length of a Colorado brook trout is normally distributed. What is the probability that a brook trout's length, (Round your answers to 4 decimal places.)
the following summary data on proportional stress limits for two different type of woods red oak and douglas fir.type
an elementary school is offering 3 language classes one in spanish one in french and one in german. these classes are
Design an imaginary study or discuss an actual study you've read about that has an experimental or quasi-experimental design that used or would use t-tests or ANOVAs in the data analysis.
Given the following rating outcomes, determine if there exists a reasonably strong degree of agreement between the two judges.
A company's net sales is $ million from 1993-2002, determine the least squares equation and based on this info, what are the estimated sales for 2005?
Determine and interpret the p-value for the test. Source: John Diamond, "Some Veterans Suffer Bone, Muscle Ailments," The Indiana Gazette, January 22, 1997, p. 5.
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