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Suppose you are given data from a survey showing the IQ of each person interviewed and the IQ of his or her mother. That is all the information that you have. Your boss has asked you to put together a report showing the relationship between these two variables. What could you present and why?
A new soft drink is being market tested. A sample of 400 individuals participated in the taste test and 80 indicated they like the taste. At a 5% significance level, test to determine if at least 22% of the population will like the new soft drink.
Body mass index is measured as the ratio of weight in kilograms to height in meters squared. Are there outliers in the distribution of BMI (justify your answer)?
Out of 1000 randomly selected people at the DMV, about how many would be expected to have to wait i) between 26.4 and 32.8 minutes? ii) longer than 39.2 minutes.
You are the manager of a softball league in the locality in which there are 5 local teams with 10 people each. The league has been arranged for parity so that each local team has 5 good players and 5 bad players.
Male runners follow a normal distribution with unknown mean u and standard deviation o = 5 kg. You compute 95% confidence interval for u. What is the 95% confidence interval for u?
Average number of mosquitoes in pond is 80 per square meter with a standard deviation of 12. If 16 square meters are choses at random for a mosquiot count, find probabilty that the average of those counts is more than 83.0 mosquitoes per square me..
What is the probability that he or she will be a problem gambler who does not play poker machines (rounded to 3 decimal places)?
Determine the mode for this distribution. Describe why you can't calculate the mean number of times using data in the table.
The probabilities that an automobile salesperson will sell 0, 1, 2, or 3 cars on any given day in February are, respectively, 0.19, 0.38, 0.29, and 0.15.
To estimate p, we use the proportion p-hat in the sample who answer "Yes." Justify the use of a normal approximation and find the following probabilities.
What is the sensitivity of the test and what is the specificity of the test - What is the PV+ of the test?
If new inspector measures 101 stampings with variance of 0.13 square inch, test at 0.05 level of significance whether inspector is making satisfactory measurements. Suppose normality.
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