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1. Give an example of a conditional probability that would be of interest to you.
2. Explain what it means for two events to be independent.
METHODS AND APPLICATIONS
3. The following contingency table summarizes the number of students at a college who have a Mastercard and/or a Visa credit card.
Have Visa
Do Not Have Visa
Total
HaveMastercard
1,000
1,500
2,500
Do Not Have Mastercard
3,000
4,500
7,500
4,000
6,000
10,000
a. Find the proportion of Mastercard holders who have VISA cards. Interpret and write this proportion as a conditional probability.
b. Find the proportion of VISA cardholders who have Mastercards. Interpret and write this proportion as a conditional probability.
c. Are the events having a Mastercard and having a VISA independent? Justify your answer.
How large a sample of sales figures is needed to make us 95 percent confident that x, the sample mean sales dollars per square foot?
Variable X is given by a Normal Random variable with mean 4 and variance 9. Variable Y is given by a Uniform Random variable over the segment from 2 to 4. Variable Z is the sum of the roll of two fair dice. (HINT: assume that the Expected value of a ..
8. John Lister (for whom Listerine is named) was a British physician who was pioneer in reducing deaths of surgical patients from infections. He suspected that bacteria were involved in transmitting infection, so he tried using carbolic acid as an op..
use the table below for questions 1-4.cust idorder idshipping costdelivery methoddelivery time hrscustomer
According to the Annual death rate from malignant neoplasms table, what is the probability that a directly exposed hibakusha (Person-years 1968-1972) living within 2 kilometers of Hiroshima would die: All hibakusha and Non-hibakusha
the electric power consumed each month by a chemical plant is thought to be related to the average ambient temperature
Consider the situations and comment on whether the sample results might cause concern about the quality of the process.
A small retail store sells a particular brand of monochrome and color television sets. Each monochrome set that is sold earns a profit of $100, while each color set earns $200 profit. The manager of the store estimates that the weekly demands for eac..
Ten percent of the population is left-handed. A class of 1800 students is selected. Convert the binomial probability P(x ≥ 15) to a normal probability by using the correction for continuity. P(x ≤ 15.5) P(x ≥ 14.5) P(x ≥ 15.5) P(x
1. Imagine yourself at a fair playing one of the midway games. Pick a game and calculate the expected value and post your results along with how you calculated them. For example, you may decide to throw a basketball to try to win a $10 bear. You paid..
Explain why we are able to compute many different values of b, the probability of a Type II error, for a single hypothesis test. Explain what is meant by A serious Type II error and The power of a statistical test.
What statistical method can you apply using this data?
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