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A bank has two incentive plans:
a) Cash back when the consumer makes an online purchase;
b) Cash back when the consumer makes a purchase at a clothing store.
The bank doesn't know whether consumers would shop online more than at clothing stores.
Develop null and alternative hypotheses to help the bank determine which option would provide the best incentive to consumers.
Give an example representing a discrete probability distribution and a continuous probability distribution. Explain why your choice is discrete and continuous.
A survey was conducted to measure height off men. In survey, respondents were grouped by age. In the 20-29 age group, the heights were normally distributed, with a mean of 69.2 inches and a standard deviation of 2.0 inches.
The mean monthly income of the trainees of an engineering firm is $600, with a standard deviation of $100. Find the probability that an individual trainee earns less than $500 per month.
Probability for simple and compound events.A certain bowler can bowl a strike 70% of the time. What is the probability that she.
Now suppose that a finished product is randomly selected. What is the probability that it is defective?
To find out whether living next to high-voltage power lines increases your chance of getting cancer, researchers selected various homes at random.
Flu cases this past season in the Oshkosh school system were about 15 per week. For the entire state, the weekly average is 16 and the standard deviation, 2.35.
Suppose an unfair coin comes up tails 42% of the time if it is flipped. If the coin is flipped 13 times, what is the probability that?
510 people were asked which of four fast food restaurant were their favorite. Determine if there is a preference for any one place over any other.
The majority of the data is basically distributed if there are enough subjects. For instance, if you collected test scores of only a few honor students, the data will most likely not be normally distributed because you would have a sample that did..
She wants to be 90% confident and be accurate within 5% of the true proportion. Find out the minimum sample size necessary.
A doctor prescribed the drug penicillin to three different patients as a form oLtreatment for an infectious disease. It is known from the general population that 20 out of every 100 individuals are allergic to the drug.
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