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A Local school district claims that the number of school days missed by its teachers due to illness is below the national averge of u = 5. A random sample of 28 teachers provided the data below. at a = 0.05, test the district's claim using P-value
0 3 6 3 3 5 4 1 3 5
7 3 1 2 3 3 2 4 1 6
2 5 2 8 3 1 2 5
Four movies are randomly selected. Their lenghts were 110, 96, 125, and 136 minutes. Find a 95% confidence interval of the average of the lenghs of the movie.
For the following, describe the target population, sampling frame, sampling unit and observation unit. Is there any selection bias or inaccuracy of responses?
Dana and Cathy are playing tennis. The probability that Dana wins at least one out of two ames is 0.3. What is the probability that Dana wins at least one out of four?
tudent from the high school is arbitarily selected. Reply the following questions: Determine the probability that the student's ACT score is less than 22?
the following are the numbers of defective parts produced in a shift by 10 workers before and after going through a
assume you have applied for two jobs a and b. the probablility that you get job a is .13. the probability of being
The number of T.V. homes in the sample having cable T.V. What is the probability that at least 2 T.V. homes in the sample are served by cable?
How many boxes must the processor sample to be 95 percent confident that the sample mean does not differ from the population mean by more than 0.2 pounds?
What is the minimal number of days a person must watch to be at least 96.8% sure of seeing one or more hawks migrating?
A company supplies poultry farmers with hens, advertising that a mature B300 Layer produces eggs with a mean weight of 60.7 grams. Suppose that egg weights follow a Normal model with standard deviation 3.1 grams.
Be certain to mention the direction of the relationship, the strength of the relationship, and whether our findings are statistically significant
clifford likes dogs. he wondered how much dog owners spend on their dogs in a year. he hypothesized that dog owners
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