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According to a survey, 90% of senior executives at major U.S corporations felt that the federal budget will not be balanced by the year 2015. Suppose that this result is true for all senior executives at U.S. corporations. Letx denote the number of senior executives in a random sample of 10 who hold this opinion. Write the Probability distribution of x and draw a line graph of the probability distribution. find the mean and standard deviation of x.
an exam consists of 44 multiple-choice questions. each question has a choice of five answers only one of which is
What are the key conceptual differences between these 3 methods? In other words, under what conditions do we choose each method for our analysis, and why?
a quiz cosists of 10 multiple-choice questions each with 6 possible answers. for someone who makes random guesses for
A standard deviation of 4,000 miles. The tires carry a warranty for 35,000 miles. a. What proportion of the tires will fail before warranty expires?
Compute mean, variance, and standard deviation of number of parents who correctly recognize their child's illness. Determine the probability at most five parents are correct.
a random sample of 200 observations shows that there are 36 sucessess. can we conclude at the 1 level of significance
suppose referendum to increase funding for education is on the ballot in a large town population over 100000. an exit
Choose and compute the appropriate descriptive statistics to describe characteristics of the sample under study (such as sex distribution, age, and ethnicity).
High precision titanium spheres are popular components in manufacturing of ball bearings. A factory has ordered a shipment of 5000 titanium spheres from aboard. It is found that the shipment has a mean radius of 1.5 cm with a standard deviation ..
for each class interval of the frequency distribution given determine the class midpoint the relative frequency and
What is the standard deviation of the sampling distribution of p(hat) the proportion of all rolls of the die that show a 1 or a 2? 3.) describe the shape of the sampling distribution of p(hat).
The assembly time for a product is uniformly distributed between 6 to 10 minutes. The probability of assembling the product between 7 to 9 minutes is
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