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In a certain district the need for money to buy drugs is stated as the reason for 75% of all thefts. Find the prob that among the next 5 thefts cases reported in this district,
a) Exactly 2 resulted from the need for money to buy drugs.b) At most 3 resulted from the need for money to buy drugs.
The average age for the individuals in the sample is M=48.9 years. How likely is it to obtain a random sample of n=16 jurors with an average age greater than or equal to 48.9?
Suppose x has a uniform probability distribution. Is the amount dispensed by the machine a discrete or a continuous random variable? Find the mean and standard deviation for the distribution.
The proportion of left handers is 0.10. What is the number of left handers in the sample and what notation is given to that number? What is the values of p and ^p?
A retailer finds that the demand for a very popular board game averages 100 per week with a standard deviation of 20. If the seller wishes to have adequate stock 95% of the time.
The standard deviation of the sample is 2.5 calls. Using the .05 significance level, can we conclude that the mean number of calls per salesperson per week is more than 44?
what sample size should be used in the funding decision study? Use σ = $4000 as a planning value. ________________
What is a quantitative interpretation of the slope here? (Use appropriate units in your explanation.) Although some might be concerned about the intercept being negative (you can't, after all, have a negative power use), that is not a problem. Expl..
Use the steps of hypothesis testing; (b) figure the effect size for the study; And (c) explain your answers to parts (a) and (b) to someone who has never had A course in statistics.
The maturity scores tend to be skewed (not normally distributed). Higher scores indicate higher Christian maturity. What statistical test should be used to analyze these data?
Calculate the 95% confidence interval for the proportion of students with at least one injury for each of the two subpopulation
Test against the null hypothesis of a one sided alternative that the difference is more than 10 minutes. Use a .1 level of significance (alpha).
Display the data in scatter plot. Calculate the linear correlation coefficient. Use the scatterplot to make a conclusion about the type of correlation.
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