Stats Help for College-level Students

Determining the probability from a given tire situation.

You buy 4 new tires. Each tire has a 0.9 probability of having a life of at least 60,000 miles. a) Find the probability you WILL NOT have to buy a new tire BEFORE you drive 60,000 miles. b) Find the probability you WILL have to replace all 4 tires BEFORE you drive 60,000 miles. c) Find the probability you will have ...continues

statistics probabilty

A new component for an airplane is being manufactured. Each has a 70% probability of working properly. A sample of 8 components is sampled. Find probability that: A) all work properly. B) 6 work properly. C) at most 3 work properly. D) at least 1 works properly.

Calculating the probability from two independent events.

The probability I'll jog today is 0.90 and the probability you'll jog tonight is 0.30. Find the probability: a) I'll jog and you don't jog. b) You'll jog and I don't jog. c) We'll both jog. d) Neither of us will jog.

Calculating the probability from the given situation.

A wheel with the following probabilities is spun: Prob(1)= 0.50, Prob (2) = 0.20, Prob (3) = 0.30 If the wheel is spun 3 times find probability that the sum of numbers you get = 6

Calculating the probability from the given product defective situation.

35% of products made by company Z are defective. A sample of 9 products is chosen. Find: a) The probability that 2 are defective b) The probability that 3 are defective c) The probability that none are defective

probability

A) A coin is tossed 20 times. Find probability of getting at least 14 heads. B) A die is tossed 20 times. Find probability of getting a "1" two times. C) Three dice are tossed. Find probability that a four shows on exactly two of the dice.

Testing for independence

I am writing problem out and attaching the data file in EXCEL needed to solve the problem. Suppose that a survey of 100 individuals who live in the western region of New York was conducted. The party affiliation (Democrat, Independent, Republican) of each individual surveyed was recorded, as well as their response to the fol ...continues

present and justify hypotheses

I need to present and briefly justify four hypotheses involving relation between pairs of variables, using the same variable as dependent. The variables I would like to use are: Immigr (DV) Income, education, and age (IV) Can you help me with this problem? Thank you,

Hypothesis testing

In order to estimate the differences between the average miles per galon of two differant models of automobiles, samples are taken and the following information is collected. Model A Model B sample size 50 55 sample mean 32 35 ...continues

Hypothesis testing

MNM Inc, has their stores located at three different locations. Random samples of the daily sales of the three stores (in $1,00) are shown below. Stores 1 store 2 store 3 9 10 6 8 11 7 7 10 8 ...continues