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A coin is tossed 25 times. let x + the number of tosses that result in heads(H) Consider the following rule for deciding whether or not the coin is fair
judge the coin to be fair if 8< x< 17.judge it to be biased if either x<17 or X>8.
what is the probability of judging the coin to be biases when its actually fair?
Suppose the population is normally distributed they make a decision to do a hypothesis test.
In fitting the simple linear regression model Yi ~ N (α + β xi, σ 2 ) to the following data:
The management of a chain of fast food restaurants wants to investigate the relationship between the daily sales volume (in dollars) of a company restaurant and the number of competitor restaurants within a 1 mile radius. The following data have b..
Confirm that these statements are accurate by finding the geometric mean rate of increase.
In general, when the dependent variable is neither interval nor ratio in level of measurement -- i.e., is not numeric -- a nonparametric statistical test is required to test the null hypothesis.
A permutation resample for a two-sample test
Find the critical value having an area of 0.95 to its right for an F-curve with 8 numerator degrees of freedom and 15 denominator degrees of freedom.
If you are performing a hypothesis test using a z statistic in which you sampled 50 people and found an average SAT verbal score of 542 (assume we know the population mean to be 500 and the standard deviation to be 100)
Using Non-parametric test, whether there is significant difference in the motor coordination skills.
What is the idea of "least squares"? What is the connection between "least squares" and linear regression?
Professor Jennings claims that only 35% of the students at Flora College work while attending school. The dean thinks that the prof. has underestimated the number of students with part-time or full-time jobs.
A group of investors wants to develop a chain of fast food cafés. In determining potential costs for each facility, they must consider, among other costs, the average monthly cost of electricity.
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