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In a survey of the 3000 boy scouts in the National Capital Area Council (NCAC), it is found that they have a mean weight of 135 lbs with a standard deviation of 15 lbs.
How many of the boy scouts have weights between 120 lbs and 150 lbs.?
How likely is it that the store owner will make at least $7,000 if she implements your suggestion?
Follow the conventions as described in the general guidelines for writing up Special Problems.
Find out the mean number of letters that will arrive in two days.
For the following data set, indicate whether the shape of the distribution is normal, positively skewed, or negatively skewed. Provide evidence for your answer by calculating the mean, mode, and median.
In a recent study of incomes in Allegheny county in Pennsylvania it was found that distribution of family incomes is skew to the right. what can we say about the relationship between mean and median?
Find the margin of error for the estimator in this survey for a 95% level of confidence . In part c, what does the 95% level of confidence imply in relation to the margin of error?
High precision titanium spheres are popular components in manufacturing of ball bearings. A factory has ordered a shipment of 5000 titanium spheres from aboard. It is found that the shipment has a mean radius of 1.5 cm with a standard deviation ..
An instructor claims the average time to take a statistics test is greater than 39 min. As, if a sample of 33 students took 43 min. is the instructor's claim true?
Summarize the relationship between sample size and confidence level.
Assume you want to repeat the FDA experiment to achieve an estimation of the mean μ of the amount of caffeine content of a cup of coffee.
To findout 95 percent with confidence interval for the mean amount a citation. Police Chief Aaron Ard of River City reports 500 traffic citations were issued last month.
A company auditor was interested in estimating the total number of travel vouchers that were incorrectly filed. In a SRS of size n =50 oft of the group of N = 250, were filed incorrectly.
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