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A sample of 2,500 people was asked how many cups of coffee they drink in the morning. You are given the following sample information. The frequency of 0 coffee is 700, the frequency of 1 cups of coffee is 900. The frequency of 2 cups of coffee is 600. The frequency of 3 cups of coffee is 300. The expected number of cups of coffee is?
A multiple choice test has three questions with 5 possible answers (and oly one right answer each). You decide to randomly guess the right answer.
A psychologist is examining the influence of an older sibling in the development of social skills. A sample of 24 three year old children is obtained.
A random sample of 56 people measured accuracy w/ positive errors representing watches that are ahead of the correct time and negative rep. those behind the time.
If a six appears for the third time, the turn of the player ends without moving the token. Determine the sample space of one such throw and determine the probability for each event.
Using substitution in one of the standard Taylor series, find the Taylor series about f for 0. Give all terms up to the term in x^3.
Set up the null and alternative hypotheses to test whether the proportion of MBA students who expect to stay at their first job five years or more is less than one-fourth of all U.S. MBA students.
How would you interpret the findings of a correlation study that reported a linear correlation coefficient of +0.3?
Suppose we want to compare the observed and expected number of events among the group 250 treatments.
You want to determine if the sample result gives good evidence that the true amount of the compound is not equal to 2 gms. Carry out the test, find the P-value, and state your conclusion.
A number of minor automobile accidents occur at various high-risk intersections. A study was done. Eight intersections were chosen at random. The number of minor accidents during a 6-month period before and after the modifications were:
A microwave manufacturing company has just switched to a new automated production system. Unfortunately, the new machinery has been frequently failing and requiring repairs and service.
Strack, Martin, and Stepper (1988) found that people rated cartoons as funnier when holding a pen in their teeth (which forced them to smile) than when holding a pen in their lips (which forced them to frown). For this study, identify the independ..
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