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Seed are often treated with fungicides to protect them in poor draining, wet environments. A small-scale trial, involving five treated and five untreated seeds, was conducted prior to a large-scale experiment to explore how much fungicide to apply. The seeds were planted in wet soil, and the number of emerging plants were counted. If the solution was not effective and four plants actually sprouted, what is the probability that
a all four plants emerged from treated seeds?
b three or fewer emerged from treated seeds?
c at least one emerged from untreated seeds?
find the range and the standard deviation correct to two decimal places. 83 96 99 99
A sample of 64 Atlanta consumers showed a mean quarterly water bill of $51 with a sample standard deviation of $12. At α = .05, does the Atlanta sample support the conclusion that above-average rates exist for this private water system?
Is this a one or two tailed test? (b) What is the decision rule? (c) What is the value of the test statistic? (d) What is your decision regarding H0? (e) What is the p-value? Please show me your calculations. Interpret the results.
Determine the first and third quartiles. Develop a box plot. Are there any outliers? Do the amounts follow a symmetric dis- tribution or are they skewed? Justify your answer.
Assume that two marbles are drawn without replacement from a box with 1 blue, 3 white, 2 green, and 2 red marbles. Find the probability of the indicated result.
based on a random sampleof 25 units of a product the sample mean is 102 pounds with a standard deviation of 10 pounds.
Find the margin of error for the 95% confidence interval used to estimate the population proportion.
If X is a normally distributed random variable with mean 97 and standard deviation 10, ?nd x2 such that P (102 X x2) = 0.05.
A market researcher wants to find the 99% Confidence Interval for the average number of hours people spend online each day.
The manufacturer would like to establish inventory levels such that there is only a five percent chance of running out of stock. Where should the manufacturer set the inventory level?
a consumer watchdog organization is concerned about credit card debt. a survey of 10 young adults with credit card debt
A sample of patients for one busy primary care practice is used as the comparison group. What is the research design and its variables?
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