Population is left-handed
Suppose that 10% of a population is left-handed. What is the probability that in a sample of n=10 individuals,3 or more individuals are left-handed?
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Suppose you are told that a 95% confidence interval for the average price of a gallon of regular gasoline in your state is from $3.33 to $3.97. Use the fact that the confidence interval for the mean is in the form x ? E to x + E to compute the sam
Create a 95% confidence interval for the slope of the regression line and explain what the interval means Create a 95% confidence interval for the average fuel efficiency among cars weighing 2,500 pounds and explain what the interval means
Suppose we have three fair 6-sided die (one colored green, one colored black, and one colored red). An experiment consists of rolling all three die. Let G, B, and R denote the numbers rolled on the green, black and red die respectively.
A newspaper conducted a statewide survey concerning the 1998 race for state senator. The newspaper took a SRS of n=1200 registered voters and found that 620 would vote for the Republican candidate. Let p represent the proportion of registered vote
What is the probability that a randomly selected family owns both a dog and a cat? What is the conditional probability that a randomly selected family doesn't own a dog given that it owns a cat?
To determine the health benefits of walking, researchers conduct a study in which they compare the cholesterol levels of women who walk at least 10 miles per week to those of women who do not exercise at all.
How many samples are possible? If X is the number of defective items in the sample, what are the possible values of X?
An ANOVA procedure is used for data obtained from five populations. five samples, each comprised of 20 observations, were taken from the five populations. The numerator and denominator (respectively) degrees of freedom for the critical value of F
Estimate the true avarage percentage of shrinkage for specimens of this type in 98% confidence interval. How large a sample size is necessary if the length of 98% interval is to be 0.4?
A random sample of 16 CSN students is taken. The average age in the sample was 27 years with a standard deviation of 4 years. Construct and interpret a 95 % confidence interval for the average age of the population.
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