Just only Answer for every question.Pls

1. The following contingency table shows the results of a random survey of age (years) and attitude to the proposed law to make voting in Australia voluntary:

	Agree	Disagree	Undecided
Under 25	69	69	31
25 to 50	26	76	11
Over 50	42	48	19

What is the probability that one randomly selected person from this sample disagrees or is under 25 years old?

Please provide your answer in decimal form or percentage form, correctly rounded to two decimal places.

Answer >

2 .You are told that P(A) = 0.5, P(B) = 0.5 and P(A or B) = 0.68

What is the value of P(A and B)?

Please provide your answer in decimal form or percentage form, correctly rounded to two decimal places.

Answer >

3.. A researcher wants to examine the relationship between opinion of a proposed new gas mine and the political party followed. The observed frequencies are summarized in the following table.

	Opinion
For	Against	Undecided
Political party followed	Greens	8	23	14
Labor	4	23	2
Liberal	8	18	3

What is the total number of respondents in this survey?

Answer >

4. In a mound shaped symmetric distribution with of 35 and of 10, according to the Empirical Rule, what are the values of the lower bound and upper bound for 95% of values in this distribution?

Give your answer correctly rounded to two decimal places.

Please place your answer in the correct positions or it will be marked as wrong.

Your answer for the lower bound:

5. Suppose that a random variable X is normally distributed with standard deviation 1, however the mean is unknown. It is known that 2.5% of values are below an x value of 10. What is the value of the mean? Give your answer correctly rounded to two decimal places.

Do NOT include units in your answer.