A sample of 2000 households is surveyed for their purchase behavior for mobile phones. Table 1:   ACTUALLY PURCHASED   PLANNED TO PURCHASE Yes No Total Yes 800 300 1100   No 100 800 900   Total 900 1100 2000     What is the sample space? Give examples of simple events and joint events. What is the simple probability of the event ‘planned to purchase’? Using this, show how marginal probability is related to simple probability.

i need help w d-f

Coronary bypass surgery: A healthcare agency reported that 87% of people who had coronary bypass surgery in 2008 were over the age of 65. Fifteen coronary bypass patients are sampled. Part 1 of 4 (a) What is the probability that exactly 10 of them are over the age of 657 Round the answer to four decimal places. The probability that exactly 10 of them are over the age of 65 Part 2 of 4 Part 3 of 4 (b) What is the probability that more than 11 are over the age of 657 Round the answer to four decimal places. The probability that more than 11 are over the age of 65 is Part: 3 4 X Part 4 of 4 X (c) What is the probability that fewer than 9 are over the age of 65: Round the answer to four decimal places. The probability that fewer than 9 are over the age of 65 is X 5 (d) Would it be unusual it all of them were over the age of 657 Use a cutoff of 0.05. It (Choose one) ▼ be unusual if all of them were over the age of 65. 5 $

Review the definitions and examples of probability of events and their complementary events.  A survey of 451 Salinas residents showed 389 voted in a recent election. When making a selection from the 451 surveyed, what is the probability the person voted in a recent election? When making a selection from the 451 surveyed, what is the probability the person did not vote in a recent election?

How do I set this up?

In a national survey college students were​ asked, "How often do you wear a seat belt when riding in a car driven by someone​ else?" The response frequencies appear in the table to the right.​  Response FrequencyFrequency   Never 124   Rarely 305   Sometimes 544   Most of the time 1217   Always 2641   Construct a probability model for seat-belt use by a passenger