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The following table lists the annual amounts of glass cullet produced by Kimble Glass Works, Inc. Scrap
Year Code (tons)2002 1 2.02003 2 4.02004 3 3.02005 4 5.02006 5 6.0
Determine the least squares trend equation. Estimate the amount of scrap for the year 2008.
An experiment ws designed to estimate the mean difference in weight gain for pigs fed ration A as compared with those fed ration B. Eight pairs of pigs were used. The pigs within each pair were littermates.
What is the coefficient of x^5 in the polynomial -8x^5+0x^3+14? Find the slope of the line that contains points (-4,-2) and (1,1)
What percentage of normal and healthly adults would be considered to have a fever? Does this percentage suggest that a cutoff of 100.6 F is approproate?
Find out the expected number of correct responses under these circumstances if one in fact selects the responses at random. What is the standard deviation?
Non directional/ Are reoffending and drugs related? Directional/ Are reoffending and drugs inversely related, such that drugs decrease as reoffending increases?
A supermarket advertises that the waiting time spend by customers waiting in line at the cash register is uniform between 0 and 6 minutes.
Decision making using the Transportation method.
The researcher wanted to investigate the influence of diet, specifically the role of saturated fat in the diet, on the development of a myocardial infarction (heart attack). What is the sample and population in this study?
If statistically significant, do you think the difference is large enough to be important?
Car A is known to have a maximum deceleration of 9.35 m/s2. How fast must car A have been going before its brakes were applied? Answer 97.5 km/h (27.1 m/s).
A final exam in Statistics has a mean of 73 with a standard deviation of 7.73. Assume that a random sample of 24 students is selected and the mean test score of the sample is computed. What percentage of sample means are less than 70?
Under what conditions should you use the Chi-Square Test to determine whether there is a difference between proportions of two independent populations?
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