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In a business class, 30% of the students have never taken a statistics class, 60% have taken only one semester of statistics, and the rest have taken two or more semesters of statistics. The professor randomly assigns students to groups of three to work on a project for the course. What is the probability that at least one of your two group mates has had more than one semester of statistics?
A. 0.10
B. 0.01
C. 0.90
D. 0.81 E. 0.19
Suppose a wedding photographer claims he can finish a bride's wedding photos in less than 7 days. You are given the following data from a sample. Formulate a hypothesis test to evaluate the claim.
q1.the average number of pounds of meat that a person consumes each year is 218.4 pounds. let the standard deviation
In chi-square goodness-of-fit test when there is close agreement between observed frequency and expected frequency, chi-square test value will be small.
Suppose that 64 smokers were sampled. Assume the sample mean and the sample standard deviation remained the same ($20 and $5, respectively).
These employees has been taken by systematic sampling, what is the value of k? The researcher would start the sample selection between what two values?
Develop a p chart with 3-sigma control limits and evaluate whether the process is in statistical control
the national center for education statistics reported that 47 of college students work to pay for tuition and living
Based on the above data, find a 95% confidence interval for the average score on the 1st quiz.
Trophies are awarded to the two persons receiving the highest and second-highest number of votes. In how many different ways can the trophies be awarded?
the diameter of the dot produced by a printer is normally distributed with a mean diameter of 0.002 inch. suppose that
Using Non-parametric test, whether there is significant difference in the motor coordination skills.
Plot the market-share data. (b) Describe the trend (if any) and discuss possible causes. (c) Fit three trends (linear, exponential, quadratic).
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