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Suppose you take an SRS of size 1000 of Pennsylvania students eligible to take the SAT and find that 75% plan to take the SAT during the 2004-2005 school year. You also take an SRS of size 1000 of Rhode Island students eligible to take the SAT and find that 76% plan to take the SAT during the 2004-2005 school year. Calculate the P-value for the test of the hypothesis p1 - p2=0. Let p1 represent the population proportion of eligible students in Pennsylvania and p2 be the population proportion of eligible students in Rhode Island.
We wish to create this mean value interval for selling price with 95% confidence level. Find out the best point estimate (average) for selling price. Critical t-value(s) associated with 95% confidence level.
His least squares regression line equation is: "assembly line output" = 1.03 + (5.1389 x Test Score). Which scatter plot has the graph of his line?
Assume that there is no available information that can be used to estimate the percentage of households in which a vehicle is owned.
The Swansons are planning to fly to Hawaii from Toronto with a stopover in Los Angeles. There are five flights they can take between Toronto and Los Angeles and ten flights between Los Angeles and Hawaii.
Mean of 3 goals per game. Find the probability that each of four randomly selected state college hockey games resulted in 6 goals being scored.
A random group of apartments was selected from a city to analize the number of bedrooms they have. Is there evidence to reject the hypothesis that the apartments are equally distributed between 1 bedroom, 2 bedroom, and 3 bedroom apartments, at al..
I have the t-score of 1.660 an a standard error of .036. I hope they are correct, but also need the test effect and test statistic, p-value.
An analyst working at BC Statistics is compiling a report on the use of the internet at home. In 1997, 250 randomly selected people were asked about the average amount of time spent on the internet per week.
In a goodness-of-fit test where the sample size is 200, there are 5 categories, and the significant level in .05. The critical value of X2 is.
If we select a crew member at random, what is the probability the crew member earns:
Data are recorded on effects of each drug. Is research division by using dependent or independent samples? Explain why?
Generate survival times X from an exponential distribution with rate lambda=1 with a censoring distribution C being exponential with rate theta = 2/3. Then Plot Kaplan-Meier Survival curve estimates along with true survival curve for n=25,100,1000..
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