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This data gives the weight for 8 corn cobs which were produced using fertilizer:
212, 234, 259, 189, 245, 176, 203, 215
a) Make a quantile-quantile plot for this data. Does it make sense to say that the weight is normally distributed? Explain.
b) Give a point estimate for the mean weight of the population and the standard deviation of the estimate.
80?% of the values are between what two? X-values (symmetrically distributed around the? mean)?
you are investigating the role of physical activity in heart disease and suggest that physical activity protects
1. the following data represent the monthly cell phone bill for a persons phone for six randomly selected months.35.34
Let N be number of heads obtained on the ten flips. Determine: If you win $1 each time a head appears and you lose $1 each time a tail appears, is this fair game? Describe.
Stanford University conducted a study of whether running is healthy for men and women over age 50. During the first eight years of the study.
Consider rolling two fair dice at the same time. What is the conditional probability of getting a pair, given that the total is 5 or lower?
Each time she obtains heads, John tosses his coin (otherwise not). Find the distribution of the total number of heads obtained by John.
describe how you would use a random number table to get a random sample of 50 people who had listed phone numbers in a
What is the advantage of a one-tailed test over a two-tailed test? Using alpha = .05, what is your decision if the p-value is 0.04 for a two-tail test?
Using the .02 level of significance, conduct a five-step hypothesis testing procedure to determine if the new processes significantly reduced the wait time.
Give an example of how a person's life situation could create such a clinical picture of depression &/or suicide.
Sensitivity of 0.98 and false-positive rate of 0.01. Calculate and interpret meaning of PV+, if test is used in the population which has the disease prevalence of 0.001.
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