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The following data resulted from an experiment to study the effects of leaf removal on the ability of fruit of a certain type to mature:
Treatment No of fruits matured No of fruits aborted
Control 141 206
Two leaves removed 28 69
Four leaves removed 25 73
Six leaves removed 24 78
Eight leaves removed 20 82
Does the data suggest that the chance of a fruit maturing is affected by the number of leaves removed? State and test the appropriate hypothesis.
From a previous study, the standard deviation of the ages is known to be 3 years.
Use differential calculus to find both sales volume at which revenue is maximised and the maximum revenue available from sales of product X.
State the decision rule using the .01 significance level. Compute the value of chi-square. What is your decision regarding Ho?
Does the confidence interval contain the value of 35 mm, which is believed to be the standard deviation of sitting heights of women?
Construct a 95% confidence interval estimate for the population proportion of administrative professionals who prefer cash bonuses.
Suppose a random sample of 25 swatches are selected. What is the probability that the mean of the sample is less than 235 pounds per square inch.
What are the most important concepts you have learned from conduct one-and two-sample tests of hypotheses? What would you recommend to your management/leadership based conduct one-and two-sample tests of hypotheses?
Using a 5% level of significance, can we say that, generally there is important difference between satisfaction levels of mid country residents and coastal residents?
The price of shares of Bank of Florida at the end of trading each day for the last year followed the normal distribution. Assume there were 240 trading days in the year.
Discuss why the standard error for the distribution of sample means is smaller than the standard deviation of sample scores. Distinguish between within-group designs and between-group designs.
After calculating the sample size needed to estimate a population proportion to within 0.04, your statistics professor told you the maximum allowable error must be reduced to just .01. If the original calculation led to a sample size of 800, the s..
What kind of probability uses sample spaces to find out numerical probability that event will happen?
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