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What is the 99% confidence interval for the difference between the two school's scores. Suppose we want to perform a two-tailed test where H0 is that μd=0. What is (approximately) the p-value of th
The estimate in Texas is 3%. the margin of error for the difference between the sample proportion is 7%. find the margin of error for the estimate in hawaii.
The standard deviation of weights is 5.5 ounces. (this standard deviation is therefore known.) how large a sample would be required in order for the 99% confidence interval to have a length of 2 oun
A random sample of 25 applicants for next fall has a sample mean GPA of 3.30. find the 95% confident interval for the mean GPA among applicants to this MBA.
What is/are the critical value(s) for this hypothesis test? If there are two critical values, give only the positive value. What is the conclusion for this hypothesis test? Choose one.
Do these data indicate that the population mean percentage increase in corporate revenue is greater than the population mean percentage increase in CEO salary?
If you compute the test value by placing the larger variance in the numerator, at the .05 level of significance, would you conclude that the risks associated with these two stocks are different?
Which is the mean for the general population. Use these results from 49 subjects, who took the Wolfson course prior to taking the SAT.
Create a scatter plot of the data (Make sure to label your axis). Does it appear that freshman retention rate is related to the 25th percentile on the ACT exam?
Suppose that you have 10 identical components in a machine, and that the lifetime of each component is independent of all the others. Write down the likelihood function as a function of w.
In particular, he would have had to judge the ratio of these two probabilities. Based on the prior and posterior probabilities given above, what is that ratio?
Suppose the answer to part a is 23 (it is not, but assume it is to do part b). If the true value of efficiency in the population is 22.5, what is the power of this hypothesis test?
Suppose there are two types of Penn State Sports fans: Rabid (R), and Casual (R'). What is the probability of any fan watching the game at Home?
what is the probability that the filling pump will cause an overflow in a can, that is, the probability that more than 12 ounces will be released by the pump and overflow the can?
According to the regression results above, what percentage of the variation in income is explained by the education level? Continue to assume that b1=4. What is the 90% confidence interval for the tru
If the park board wishes to maximize average usage of the complex, formulate the integer programming problem to determine which facilities should be included.
Develop the linear programming model to indicate how many of each model should be produced and how to allocate the workforce in order to maximize revenue.
Formulate the LP model to maximize weekly profit and determine how many repairs of each time should be conducted per week.
What can you say about the percentage of days that more than 425 vehicles used the intersection? Assume you know nothing about the shape of the relative frequency distribution for the data.
The random variable X is continuous and uniform in [-1, 1] with probability density function given by determine analytically and plot the probability density function of Y;
Compute the probability that the wave height H>24 meters; this is the probability of occurrence of giant waves in the middle of ocean usually called as rogue waves.
Consider the continuous random variable T=' waiting time at the bus station'. Determine the sample space S associated with the random variable T;
What are the consequences of making a Type II error (briefly discuss at least one practical consequence of making this type of error)?
Has there been a significant decrease in the proportion of students who change their major after the first year in this program? Conduct the test of the .05 level of significance. Use the p-value me
Suppose you toss a dart at a circular target of radius 20 cm. Given that the dart lands in the upper half of the target, find the probability that it lands in the right half of the target.