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For a sample of 6 companies, annual gross income (thousands) and average monthly expenditures on office supplies were recorded

Income: 5.0 21.7 42.8 62.9 84.3 100.6

Office Supplies: 9.25 36.72 75.09 100.24 190.67 272.44

for the companies with annual gross income of $52,540 what is the upper limit of the 95% confidence interval of monthly expenditures on office supplies rounded to the nearest dollar?

$80.35

$26.34

$145.99

$200

 
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For a sample of 6 companies, annual gross income (thousands) and average monthly expenditures on office supplies were recorded:

Income 5.0 21.7 42.8 62.9 84.3 100.6

Office supplies 9.25 36.72 75.09 100.24 190.67 272.44

For companies with annual gross income of $52,540, what is the upper limit of the 95% confidence interval of monthly expenditures on office supplies rounded to the nearest dollar?

 
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For a reaction of the type A + B  Products It is observed that doubling the concentration of A causes the reaction  rate to be four times as great but doubling the amount of B produces no apparent effect on the rate. The rate equation is: (a) Rate = k [A][B] (b) Rate = k [A]2 (c) Rate = k[A]2[B] (d) Rate = k[A]2[B]2

 
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Need some guidance with this equation. A brief explanation with be greatly appreciated.

For a random variable x. a new random variable y can be created by applying a linear transformation 3! = a + bx, where a and b are constants. If the random variable xhas mean p1 and standard deviation ox, then the mean. variance and standard deviation of y are given by the following formulas. H=fl+bpx 62y=b2°21 Dy=lbl51 The mean annual salary for employees at a company is $34,000. At the end of the year, each employee receives a $5000 bonus and a 9% raise (based on salary).What is the newI mean annual salary [including the bonus and raise} for the employees?

 
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For a profit-maximizing monopolistically competitive firm, marginal revenue equals marginal cost in

the short run but not in the long run.

the long run but not in the short run.

both the short run and the long run.

neither the short run nor the long run.

 
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For a population that has a standard deviation of 10, figure the standard deviation of the distribution of means for samples of size- (b) 3. Problem 6: For each of the following samples that were given an experimental treatment, test whether these samples represent populations that are different from the general population: (a) a sample of 10 with a mean of 44, (b) a sample of 1 with a mean of 48. The general population of individuals has a mean of 40, a standard deviation of 6, and follows a normal curve. For each sample, carry out a Z test using the five steps hypothesis testing with a two-tailed test at the .05 significance level, and make a drawing of the distributions involved.

For a population that has a standard deviation of 10, figure the standard deviation of the distribution of means for samples of size­ (b) 3. Solution:The standard deviation of the distribution of…

 
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For a patient who has a normal dentition without any spaces appliances or periodontal problems which of the following dialy routine should effectively remove plague

 
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For a particular scientific experiment, it is important to be completely isolated from any magnetic field, including the earth’s field. A 1.50m-diameter current loop with 220 turns of wire is set up so that the field at the center is exactly equal to the earth’s field in magnitude but opposite in direction. What is the current in the current loop?I=________A

 
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 For a string stretched between two supports, two successive standing-wave frequencies are 510 Hz and 680 Hz. There are also other standing waves with higher and lower frequencies. What is the order of these two harmonics (first, second, etc.)? If the speed of the propagation of transverse waves is 85 m/s what is the length of the string

 
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For a standardized psychology examination intended for psychology majors, the historical data show that scores have a mean of 505 and a standard deviation of 180. The grading process of this year’s exam has just begun. The average score of 40 the exams graded so far is 508 . What is the probability that a sample of 40 exams will have a mean score of 508 or more if the exam scores follow the same distribution as in the past?

Carry your intermediate computations to at least four decimal places. Round your answer to at least three decimal places.

 
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