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To study the effect of pesticides on birds, a scientist randomly and equally allocates
N= 65 chicks to five diets (a control and four with a different pesticide included). After a month each chick's calcium content (mg) in 2 cm length of bone is measured resulting in the following:
Control
Pesticide
1
2
3
4
Mean
11.54
11.00
11.42
11.44
11.28
Standard
0.27
0.47
0.31
0.42
Deviation
Construct the ANOVA table (i.e. compute the between and within SS) and test if there appears to be any differences in means (use α = 0.05)
Obtained first quartile = 47 third quartile = 70 standard deviation = 8 range = 58 mean = 58 median = 63 mode = 56 midrange = 63. what was the highest score earned.
She figures that each box costs $ 2.59 plus $ 0.21 shipping and handling, which totals $ 2.80, then she adds $ 0.70 profit to each box and sells it for $ 3.50. Do you think this is a good pricing strategy? How would it compare to marking up by a p..
At the .05 level of significance, is there evidence of a difference in the mean ontime percentages for the 25 airports between September 2009 and September 2010?
Variance of 4.2 and mean of 23.2 were calculated. Find out 95% confidence interval on mean and standard deviation. Describe any potential problems with this analysis.
A mean of 25 inches and a standard deviation of 5 inches. What is the probability that the area receives at least 30 inches of rain in a year?
The probability of drawing two diamonds (to complete a flush) after discarding the 5 and 7.
Proportion nonconforming is 0.10. what is the probability of (1) 1 nonconforming unit in the sample (b) 1 or less (c) 2 or more?
A random sample of 1440 current job applicants results in 61 failures (based loosely on data from the American Management Association).
Describe the data appear the strength of the relationship among variables is sufficient to warrant using linear regression forecasting.
Set up a 99% confidence interval estimate of the true population mean amount of glue contained in a 2-litre can. On the basis of your results, do you think that the quality control analyst has a right to complain to the manufacturer?
Profitability at a bank is declining as customers are shifting to other banks. As a researcher, identify the problem (root cause of the symptom) through a scientifically crafted research proposal.
Patrick was studying effects of small rewards (such as candy, gum, and soda pop) on intrinsic motivation. He tested fifth-grade children in a special room set aside by the school.
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