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The amounts of money won by the top ten finishers in a famous car race are listed below.
$1,172,246$163,659$440,584$350,634$290,596$186,731$145,809$143,209$139,096$125,106
What was the mean prize earned? Round your answer to the nearest cents.
Suppose n = 1000 persons are to be sampled from this population and the sample proportion of married persons (ρ-hat) is to be calculated. What is the mean of the sampling distribution of ρ-hat?
Standard error for regression equation - determination and non determination and explain the meaning of each.
A neurologist wants to detect whether the mean response time for drug-injected rats differs from a control group not injected. The control group has the mean response time of 1.2 seconds.
Is there evidence to suggest a difference in the mean waiting times at the four body shops? Use the .05 significance level.
A linear correlation coefficient very close to 0 implies that there is a linear correlation between the averages, but a correlation between the averages does not imply a correlation between individuals as the conclusion incorrectly suggest.
There are 6 children in a family. The number of children defines a population. The number of simple random samples of size 2 that are possible equals:
The first unit required 9800 hours to manufacture. The company expects to experience an 82% unit learning curve. Estimate the cost of the 20th unit. (Round intermediate calculations to 4 decimal places)
The quality control director for a clothing manufacturer wants to study the effect of operators and machines on the breaking strength (in pounds) of wool serge material. Is there an interaction between operator and machine?
Evaluate the strength of the relationship by computing the coefficient of determination.
The length of a Colorado brook trout is normally distributed. What is the probability that a brook trout's length, (Round your answers to 4 decimal places.)
If you are dealt 3 cards from a shuffled deck of 52 cards, find the probability that all 3 cards are queens. A fair coin is tossed 8 times in succession. Find the probability of getting at least 4 heads.
Prepare a frequency distribution from data given below that describes how long it took a person to drive to work in work week.
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