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Explain the relationship between sample size and the likelihood of a statistically significant difference between measured values of two groups. In other words, explain why, all else being equal, as sample size increases the likelihood of finding a statistically significant relationship increases.
In which category is ANOVA properly classified?
Now assume institutional cache is used. Hit rate for cache is 0.6. Determine the total average response time.
Compute the Relative risk (RR) of ADR with Drug A compared to Drug B. Show all calculation. Interpret the RR value. Do you arrive at the same conclusion based on the OR estimate and RR?
The buyer-believes that the differences are normally distributed and will use this sample to perform an appropriate test at a level of significance of 0.01.
At.05 level of significance, is there sufficient evidence to conclude that difference exists between proportion of cats and proportion of dogs which sleep more than 10 hours per day?
Conceptually we would expect the probability of newborn males and females to be the same. However, census reports indicate that the ratios of males and females in various countries do not conform to the theoretical prediction.
At least half the patients are under 15 years old? First, describe how this can be modelled as a binomial distribution with 8 trials, where success is visitor age is under 15 years old and the probability of success is 20 percent.
Further, 20 students get both questions 1 and 2 incorrect, 15 get both questions 2 and 3 incorrect, and 8 get both questions 1 and 3 incorrect, and 7 get all three questions incorrect. Find the probability that a randomly selected student: a) Gets..
Obtain a test statistic and p -value. Interpret the results at α = .01.
Testing equality of variances - evidence of a difference in the variability of monthly talking time on cell phones for men and women?
Based on this sample information find out what percent of variation in starting salaries is described by GPA, and find out the equation that would forecast salary from GPA. Give a scatter plot.
The lifetimes of light bulbs of a particular type are normally distributed with a mean of 370 hours and a standard deviation of 5 hours. What percentage of bulbs has lifetimes that lie within 1 standard deviation of the mean on either side?
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