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I need help on understanding the confidence interval and the power of the test at a particular point of interest.
What happens to the confidence interval and the power of the test at a particular point of interest
A) as one increases the sample size of a test, all else remaining the same.
B) as one increases the level of significance of a test, all else remaining the same.
Use this information to determine the empirical probability that the next bird to visit the feeding station will be a dove.
Assuming an exponential service rate μ, set this up as a birth and death process and determine the birth and death rates.
A marketing poll revealed that 45% of Americans say they that they have dinner regularly as a family. You randomly choose 10 American families and ask if they regularly have dinner together as a family.
We are asked to test for independence between age (i.e., adult and teen) and drink preferences.
A manufacturer claims that the life span of its tires is 52,000 miles. You work for a consumer protection agency and you are testing these tires. Assume the life spans of the tires are normally distributed.
Cheating Gas Pumps When testing gas pumps in Michigan for accuracy, fuel-quality enforcement specialists tested pumps and found that 1299 were not accurate (within 3.3 oz when 5 gal is pumped), and 5686 were accurate.
Estimate the population means growth in 1 year for 14-year-old boys. Make a point estimate and an 80% confidence interval estimate.
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).
Can researcher conclude that humidity has significant effect on eating behaviour? Use two-tailed test with a = 0.05.
Divide your data in half, your first 8 observations and your last 7 observations. Then use ANOVA to test to see if there is a significant difference between the two halves of your data. This list of Webpages that Perform Statistical Calculations h..
I tossed a coin 6 times and recorded the outcomes - H for heads and T for tails. The first set of tosses yielded HTHTTH and the second set of tosses yielded TTTHHH. Which set of tosses is more probable to happen? And why?
Find the probability that fewer than 10 of those sampled currently have access to online services.
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