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Question: According to the U.S. Bureau of the Census, about 75% of commuters in the United States drive to work alone. Suppose 150 U.S. commuters are randomly sampled.
a. What is the probability that fewer than 105 commuters drive to work alone?
b. What is the probability that between 110 and 120 (inclusive) commuters drive to work alone?
c. What is the probability that more than 95 commuters drive to work alone?
determine the area under the standard normal curve that lies between a z -0.83 and z 0.83 b z - 1.35 and z 0 c z
Compute the values of the limits for the X and S charts and wstimate the value of σ on the assumption that the process is in statistical control.
At the beginning of the study, the researchers theorized that the A/R group would allocate the least audit effort to receivables and that the A/P group would allocate the most. Formally stated, the researchers believed that μAR C AP. Do the result..
Probability the second truck is available is .50, and the probability that both trucks are available is .30. What is the probability neither truck is available?
the diameter of a certain buleet is known fo have a normal distribution with standard deviation 0.01cm. a random sample
We toss an unfair coin 100 times in a row. We play according to following rules: If tail: +$1 If head: -$1.45 P (head=0.4) Estimate chances to earn at least $3 at the end of this experiment.
There are two theories available to determine the tests fairness based upon test questions.
Find the probability that a randomly selected Bread Basket Bakery would be eligible to carry the Nordic Ecolabel. Find the probability that a randomly selected Bread Basket Bakery uses between 1.25 and 1.75 kilowatts of energy per hour per kg
the addition of a new accelerator is claimed to decrease the drying time of latex paint by more than 4. several test
Interpret the estimated coefficient for the toxemia variable and what are the odds of a hemorrhage for infants whose mother had toxemia?
for a t distribution with 16 degrees of freedom find the area or probability in each region.4 digits to the right of
A study of the scores on an in-plant course in management principles and the years of service of the employees enrolled in the course yielded the following statistics.
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