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Question: Suppose that you are seated next to a stranger on an airplane and you start discussing various topics such as where you were born (what state or country), what your favorite movie of all time is, your spouse's occupation, and so on. For simplicity, assume that the probability that your details match for any given topic is 1/50 and is independent from one topic to the next. If you discuss 10 topics, how surprising would it be to find that you match on at least one of them?
The test results are shown below. At a = 0.05, can it be concluded that the book scores are higher than the DVD scores?
for a given set of data the standard deviation measuresthe difference between the mean and the data point farthest from
Suppose {a_n} (n=1 to N) and {b_n} (n=1 to N) are two finite sequences of complex numbers. Let B_k = sum b_n (sum n=1 to k) denote the partial sum of the series sum (b_n) with the convention B_0=0.
The 95% confidence interval is defined as ____. a) an interval such that we are 95% confident that the population value lies within the interval b) an interval such that the probability is 0.95 that the interval contains the population value
Three members of a club will be selected to serve as officers. The first person selected will be president, the second person will be vice-president and the third will be secretary/treasurer.
Many law enforcement agencies use voice-stress analysis to help determine whether persons under interrogation are lying. If the sound frequency of a person's voice changes when asked a question
Compute the two groups using Paired sample t-test. Compute which modification reduced the number of traffic accidents
The Federal Government is stepping up efforts to reduce average response times of fire departments to fire calls. The distribution of mean response times to fire calls follows a normal distribution with a mean of 12.8 minutes and a standard deviat..
the table below summarizes results from a study of people who refused to answer survey questions. a market researcher
Let X equal the number of cells activating the alarm when the temperature reaches 100_Fahrenheit. Find the probability that the alarm will function when the temperature reaches 100_F.
At the .05 significance level, can we conclude that more than 60% of the homes have an attached garage? What is the p-value.
For each definition, identify the correct term for the type of bias being defined. Possible answers are selection bias, non-participation bias.
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