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Prepare a frequency distribution from data given below that describes how long it took a person to drive to work in work week.
Monday-15 minutes
Tuesday-10 minutes
Wednesday-25 minutes
Thursday-9 minutes
Friday-10 minutes
Calculate the Standard Deviation of above data.
Is this a normal distribution?
What are the implications?
Let 3 trails (they may not be independent), each of which is either success or not. Let X denotes number of successes. Assume E[X] = 1.8. Determine the largest possible value of P(X=3)?
Is there evidence to suggest a difference in the mean waiting times at the four body shops?
Expected value, variance and standard deviation.A volunteer ambulance service handles 0 to 5 service calls on any given day. The probability distribution for the number of service calls is as follows.
A game involving a pair of dice pays out $4 with probability 16/36, costs you $2 with probability 14/36, and costs you $6 with probability 6/36.
If the true mean for Saturday sales is now $4500, what is the probability of accepting the (false) null hypothesis.
A random sample of 100 oranges is gathered and the mean diameter obtained was 5.12. If another sample of 100 is taken, what is the possibility that its sample mean will be greater than 5.12 inches.
Mattel Corporation produces a remote-controlled car that requires three AA batteries. The mean life of these batteries in this product is 35 hours with a standard deviation of 5.5 hours. As part of its testing program Sony tests samples of 16 batt..
Using the 0.95 degree of confidence, what is the interval estimate for the population proportion (to the nearest tenth of a percent)?
A fair die is rolled nine times. What is the probability that an odd number (1,3 or 5) will occur less than 3 times?
A psychologist claims that more than 6.3% of the populations suffer from professional due to greate shyness. Categorize the Type II error in this context.
What are the best-case and worst-case outcomes the owner may face on this product if she implements your suggestion?
How many voters required to be sampled to evaluate the proportion within 0.05 with 95% confidence?
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