Please Show the expression you are using, and the substitutions you are making to calculate an answer. Please provide detailed explanations. I am new this field and would like detailed explanation to learn better.

Q1. A marketing manager of a leading firm believes that total sales for the firm next year can be modelled by using a normal distribution, with a mean of $2.5 million and a standard deviation of $300000

1. What is the probability that the firm's sales will exceed $3 million?
2. In order to cover fixed costs, the firm's sales must exceed the breakeven level of $1.8 million. What is the probability that sales will exceed the break-even level?
3. Determine the sales level that has only a 9% chance of being exceeded next year.

Q2.An international aerospace company has submitted bids on two separate government defense contracts, A and B. The company feels it has a 50% chance of winning contract A and a 40% chance of winning contract B. Furthermore, it believes that winning contract A is independent of winning contract B.

1. What is the probability that the company will win both contracts?
2. What is the probability that the company will win either of these contracts?

Q3.The following examples can be identified as (1) Categorical/non-ordinal; (2) Categorical/ordinal; (3) Numerical/interval; or, (4) Numerical/ratio scale. For each example, place the number from above which best describes it

------ Your satisfaction level with the Blu-ray player that you purchased

------ The total time you use the Blu-ray player every week on the average

------ How many Blu-ray players made by other manufacturers have you used?

------ The possible responses to the question "Are you happy, indifferent, or unhappy with the performance per dollar spent on the Blu-ray player?"