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Seed compnay has a test plot in which it is testing the germination of a hybird seed. They plant 50 rows of 40 seeds per row. After a two-week period, the researchers count how many seed per row have sprouted. They noted that least number of seeds to germinate was33 and some rows had all 40 germinates. The germination data is given below. The random variable x represents the number of seed in a row that germinates and P(x) represents the probability of selecting a row with that number of seeds germinating. Determine the standard deviation of the number of seeds per row that germinated.
x: 33 34 34 36 37 38 39 40P(x):0.02 0.06 0.10 0.20 0.24 0.26 0.10 0.02
How would you use the "margin of error" in estimating the percentage of all adults who think that Venetian blinds are the hardest to clean?
The availability of venture capital provided by big boost in funds available to companies recent years. According to Venture Economics, 2,000 venture capital disbursements were made in 1999.
Would you play this game if you wanted to make money? What do we expert the value of the results of the game to be?
Make a scatterplot to determine what kind of relationship there seems to be between the two variables. Use the percent of lead removed as the response variable.
How many students must we sample if we want to be within 4% of the true proportion of female students at DeVry University when using a 95% confidence interval?
The number of items rejected daily by the manufacturer because of defects for last 30 days are:
Recognize independent variable and dependent variable for this experiment. Think in your head what influences what? Or, what causes what? Cause is independent variable.
Construct a 95% confidence interval estimate of the difference in kilometers per liter. Do the results of parts (a) and (b) agree? Explain why or why not.
Determine the largest village in terms of the population?
The mean is a useful measure, but it can be misleading. Describe a circumstance when the mean is very useful as the average and a circumstance when the mean is very misleading as the average.
The results of a survey for an airline are shown below. Use the chart to find the probability that the traveler was
Suppose a study is constructed to test a claim, at a 0.05 signifigance level that a population proportion is 40%. A simple random sample of 750 subjects has a proportion of 42%.
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