A large study concluded 78% of all college students drink moderately. What is the probability a random sample of 225 college students will have a sample proportion that is within 5% of what the study...

A large study concluded 78% of all college students drink moderately. What is the probability a random sample of 225 college students will have a sample proportion that is within 5% of what the study...

it has been estimated that 65% of all computers being used in the classrooms are Macs. A random sample of 300 classrooms is selected and the number of macs is counted. What is the probability the...

Suppose that 40 percent of the hourly employees in a large film are in favor of union representation, and a random sample of 10 employees is contacted and asked for an anonymous response. What is...

because of high interest rates, a firm reports that 10 percent of its accounts receivable from other buisness films are over due. If an accountant takes a random sample of 8 such accounts determine...

The hypothenuse, X, of an isosceles right triangle is a uniform random variable on 0, 1]. Calculate the expected value and the variance of the area of the triangle.

Five males with a particular genetic disorder have one child each. The random variable x is the number of children among the five who inherit the genetic disorder. Determine whether the table describes...

A new computer is sold with innovative flash memory. When compared to computers with conventional memory, the new machine is clearly faster, but initial tests indicate there is more variation in processing...

A population is formed my placing 5 balls labelled 1,2,3,4 and 5 respectively. Mean of this population is 3. Someone who does not know the contents of this bag will estimate the balue of mean by randomly...

When a large number of a particular seed is planted, it is known that 70% of the seeds will germinate. In addition, the germination of one seed is independent of the germination of any other seed...

A population is formed my placing 5 balls labelled 1,2,3,4 and 5 respectively. Mean of this population is 3. Someone who does not know the contents of this bag will estimate the balue of mean by randomly...

Current research for social media usage shows a chronbach's alpha of 0.91 between gen xers and millennials. Can I use this value to calculate a good sample size for my own study? If so, how?

a. 1-∝=0.99, n=55 b.1-∝=0.90, n=55 c.1-∝=0.99, n=21 d.1-∝=0.99, n=70 e.1-∝=0.95, n=34

Is a part two to this question asking what is the probability of there being fewer than 2. So if you can help with that as well it would be greatly appreciated.

A film developer claims that the main number of pictures developed for camera with 27 exposures is less than 25. if a hypothesis test is performed how should you interpret a decision that were (a)...

passing through the intersection of blossom hill road and the Altadena expressway varies from 14 to 35 mph is uniformly distributed. None of the cars travel over 35 mph through the intersection. μ=...

A probability problem

A manufacturer makes ball bearings that are supposed to have a mean weight of 30 g. A retailer suspects that the mean weight is actually greater than 30 g. The mean weight for a random sample of 16...

(a) What is the probability that a randomly selected pregnancy lasts less than 293 days? The probability that a randomly selected pregnancy lasts less than 293 days is approximately nothing. (Round...

Examine Figure 6-37. Government documents and the Census Bureau show that the age at first marriage for U.S. citizens is approximately normally distributed for both men and women. For men,...

it is a probability question. I need help

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