Questions from Business Statistics

Q: The random variable defined as the “number of people who arrive

The random variable defined as the “number of people who arrive at a store during a 15-minute interval,” is an example of __________. a) An experimental random variable b) A continuous random variable...

Q: In the distribution of a random variable x which is binomial with

In the distribution of a random variable x which is binomial with number of trials n = 30 and the probability of success p = 0.99, the largest value of x that can occur is __________. a) 24 b) 30 c) 1...

Q: Which of the following is a characteristic of a hypergeometric distribution?

Which of the following is a characteristic of a hypergeometric distribution? a) It is a continuous distribution. b) It has undefined trials c) The outcome of each trial is a success or a failure or u...

Q: If a continuous random variable has a uniform distribution between 20 and

If a continuous random variable has a uniform distribution between 20 and 70, the graph of its distribution will be a rectangle with height equal to __________. a) 50 b) 1/50 c) 20 d) 70 3. The...

Q: All normal distributions can be converted into a single distribution called the

All normal distributions can be converted into a single distribution called the __________. a) Universal or U-distribution b) General or G-distribution c) Standard normal or the z- distribution d) Com...

Q: The shape of a symmetrical binomial distribution with large sample size,

The shape of a symmetrical binomial distribution with large sample size, i.e., a large number of possible outcomes, would most likely look like a __________. a) Rectangle b) Whale c) Bell d) Hocke...

Q: A score on a 15-point multiple choices quiz measuring knowledge

A score on a 15-point multiple choices quiz measuring knowledge of statistics is an example of a(n) a) Nominal b) Ordinal c) Interval d) Ratio e) Exponential 24. Which level of data measurement allows...

Q: Selection of the winning numbers is a lottery is an example of

Selection of the winning numbers is a lottery is an example of __________. a) Convenience sampling b) Random sampling c) Nonrandom sampling d) Regulatory sampling 7. A random number generator is usual...

Q: Suppose samples of size 100 are drawn randomly from a population that

Suppose samples of size 100 are drawn randomly from a population that has a mean of 20 and a standard deviation of 5. What is the probability of observing a sample mean between 19 and 20.5? a) 0.3413...

Q: The luggage weights for passengers for an airline are normally distributed with

The luggage weights for passengers for an airline are normally distributed with a mean of 25 lbs., and a standard deviation of 3 lbs. Suppose the limit on the total luggage weight is 2600 lbs. If 100...