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The accomanying table is a one way, independent groups ANOVA summary table with part of material missing.
source ss df s2 fobt
btw groups 1253.68 3within groupstotal 5016.40 39
a. fill the missing values.b. how many groups are there in the experiment?c. assuming an equal number of subject are there in each groupd. what is the value of F crit, using alpha 0.05?e. is there a significant effect?
Of all 3 to 5 year old children, 56% are enrolled in school. A sample of 500 children age 3 to 5 year old is ramndom selected. Find the probability that at least 250 children are enrolled in school.
The average amount of time between a score by either team in college soccer games is 15.2 minutes.
Election officials take a random sample of 100 signatures and thoroughly investigate them to find that 84% are valid. Is this statistically significant evidence that the candidate has enough valid signatures overall? Explain.
To see if his belief is substantiated, conduct the test at a suitable significant level. State the assumptions made. see if his belief is substantiated, conduct the test at a suitable significant level. State the assumptions made.
Assuming the tires are selected at random from among all tires being produced, how many tires in the shipment of 3000 are expected to have a lifetime that is less than 35,000 miles?
A random sample of 40 part time workers has a mean annual earnings of $3120 and a population standard deviation of $677. Compute the 95% confidence interval for the mean.
Why do the critical values from the Chi-square distribution get larger as the degrees of freedom get larger? Recall that this is opposite the pattern for the t-table.
If another sample of 1000 companies is taken, do you expect the sample mean to be 7.2 again? Why or why not? Repeating this experiment many times with different samples.
How does bell-shaped curve for sampling distribution of sample means for samples of size n =120 compare tobell-shaped curve for sampling distribution of sample means for samples of size n =95?
Using z-scores, a population with mean = 37 and standard deviation = 8 is standardized so that the new mean is mean = 50 and standard deviation = 10. How does an individual's z-score in the new distribution compare with his/her z-score in the orig..
Based on observations of a few third graders in the lunch line, they assess P(P) as 0.75. More convincing evidence that P(P) is .75 would be?
Of those customers using extra unleaded or premium gas, 60% fill their tanks. What is the probability that the next customer fills the tank?
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