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2. The producers of a new toothpaste claim that it prevents more cavities than other brands of toothpaste. A random sample of 60 people used the new toothpaste for 6 months. The mean number of cavities at their next checkup is 1.5. In the general poplation, the mean number of cavities at a 6 month checkup is 1.73 (s.d. = 1.12).
Describe each r value in words
What are the assumptions made in performing the hypothesis test in Question 3? Are these assumptions reasonable? Provide explanation to substantiate your view.
How does the decrease in confidence affect the sample size required?
You are expected to complete a project related to inferential statistics - show that the random variable X is exponential and compute the probability of the wait time when it is greater
How are the degrees of freedom for the chi-square hypothesis tests different from those of most other hypothesis tests? In most previous hypothesis tests, the degrees of freedom have been based on sample size.
Find a necessary and sufficient condition on the parameters for corr
There evidence that the mean price is higher at Whole Foods Market than at the Fairway supermarket and interpret the meaning of the p-value in (a)
A statistics professor plans class so carefully that the lengths of his classes are uniformly distributed between 45.0 and 55.0 minutes. find the probability that a given class period runs greater than 50.75 minutes? find the probability of se..
A medical researcher wishes to estimate what proportion of babies born at a particular hospital are born by Caesarean section. In a random sample of 100 births at the hospital, 34% were Caesarean sections. Find the 95% confidence interval for ..
1.consider the following scenario for object recognition with two types of objects a and b where the ultimate goal is
What is the probability
When Susan and Jessica play a card game, susan wins 60% of the time. if they play 9 games, what is the probability that jessica will have won more games than susan?
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