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One environmental group did a study of recycling habits in a California community. It found that 73% of the aluminum cans sold in the area were recycled. (Round your answers to four decimal places.)
(a) If 392 cans are sold today, what is the probability that 300 or more will be recycled?
(b) Of the 392 cans sold, what is the probability that between 260 and 300 will be recycled?
If the ingredient was present a code of "1" was used and a "0" otherwise. At the .05 significance level, does this data show a difference in the taste ratings?
rolling dice 25 times gives the below results. using your results find the relative frequency for each of the values 2
Compute the appropriate Test Statistic to test null hypothesis that mean of population is 4.3 against alternative hypothesis μ ≠ 4.3.
4 7 7 5 2 9 7 6 8 5 8 4 1 5 2 8 7 6 6 9. (a) Determine three quartiles and (b) draw box-and-whisker plot of the data.
a technician plans to test a certain type of resin developed in the laboratory to determine the nature of the time it
Kim starts to walk 3 mi to school at 7:30 a.m. with a temperature of 0 degrees F. Her brother Bryan starts at 7:45 a.m. on his bicycle, traveling 10 mph faster than Kim.
How would one determine which combination of variables is the best (with statistical significance)? If that's not possible, can we show that one combination is statistically significantly worse than the others? What method would be used?
q1.in developing a regression equation from the following data to predict y by x the slope isxy9188155713a1.88 b 0.44 c
What is the chi-square test statistic for H0? What are the degrees of freedom?
A scientist wants to estimate the proportion of plants with berries growing in a particular region. They want to be within 6% of the true proportion.
A quality control engineer wanted to estimate the mean weight (in grams) of M&M candies being produced on a certain machine in the factory. After collecting an appropriate random sample of M&M candies, he obtained the following weights:
Why is sampling strategy important? Please provide one or two examples from your work or past experience?
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