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You conduct 8 Bernoulli trials for which the probability of success is 0.85. What is the probability that you will obtain exactly two successes? Round your answer correct to two decimal places.
At the .01 significance level, can we conclude that there is more variation?
At.01 significance level, can we conclude that 30-year mortgage rate for small banks is less than 6%? Evaluate the p-value.
What is the coefficient of determination, and wat is its meaning?
What is the decision regarding the null hypothesis (is there a difference in the mean numbers of cameras sold at the three department store chains)?
Quantify the uncertainty of your estimate by giving the standard deviation of the distribution. Round your response to at least three decimal places.
The daily numbers of calls received by the Internal Revenue Service office in July are shown below:
The Web-based company Henrietta Balloons has a goal of processing 96% of its orders on the same day they are received. If 95 out of the next 100 orders were processed on the same day, would this prove that they are exceeding their goal, using a 90%..
Pulse rate is an important measure of the fitness of a person's cardiovascular system. The mean pulse rate for all U.S. adult males is approximately 72 heart beats per minute.
Scores on a scholastic aptitude test are normally distributed with standard deviation σ=100 points. A group of 25 inner city high school students takes the test; their mean scores is x-bar = 440 points.
A furniture store claims that a specially ordered product will take, on average, M = 35 days (5 weeks) to arrive. The standard deviation of these waiting times is 8 days.
Out of 1000 people surveyed, 600 belonged to urban areas and rest to rural areas. Among 500 who visited other states , 400 belonged to urban areas. Test 5 % level of significance whether area and visiting other state are dependent.
What can one conclude about the librarian's hypothesis at a level of significance of .05?
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