Math Answers

Q2. A school organized a book fair and in this book fair a book seller is selling his books under the following rules:

There are three different packages available.

First package contains 2 Islamic books, 2 Science books and 2 Geography books, second package contains 2 Islamic books, 4 Science books and 1 Geography books and third package contains 3 Islamic books, 4 Science books and 5 Geography books. The book fair has a total of 250 Islamic books, 300 Science books, and 270 Geography books. First package makes a profit of Rs. 120, second package makes Rs.100 and third package makes Rs.270 per pack.

How many packs should be made to maximize book fair profits?

What will the profit be?

The 95% confidence limits of mean yarn tenacity based on 100 test samples is 30±1.5.The number of tes samples required to obtain 95% confidence limits of 30±0.5 is..

The director of a large firm wants to determine the opinion of various groups of employee towards a proposed performance evaluation method. A random sample of 100 employees from the finance ,50 employees from production and 50 employees from personal department is saved with the following results.

Opinion Finance Production Personnel

Favor 63 27 30

Oppose 37 23 20

Totals 100 50 50

At the 0.01 level of significance, is there evidence in attitude the method between various department

1. In a study of consumer confidence among middle-class families, 450 were interviewed in the metropolitan area of the country. When asked about having to cut back on discretionary purchases of big-ticket items, 180 of 450 responded that their families had done so over the previous 6 months.

A. What is the 90% confidence interval estimate of the population proportion p of this type of household cutting back on discretionary spending?

B. What sample size would you recommend to achieve a slandered error of 0.03?

Find the integral surface of the linear partial differential equation x(x^2+z)p - y(y^2+z)q = (x^2-y^2)z; p, q has their usual meaning , which contains the straight line. [CO1] *

. XX company assembles electrical components for the last 10 days the company had averaged 9 rejected with standard deviation of 2 rejects.DD company averaged 8.5 rejected with standard deviation of 1.5 rejects. At the 0.05 level of significance can we conclude that there is more variation in the number of rejects per day for the XX company. 

Q2. A school organized a book fair and in this book fair a book seller is selling his books under the following rules:

There are three different packages available.

First package contains 2 Islamic books, 2 Science books and 2 Geography books, second package contains 2 Islamic books, 4 Science books and 1 Geography books and third package contains 3 Islamic books, 4 Science books and 5 Geography books. The book fair has a total of 250 Islamic books, 300 Science books, and 270 Geography books. First package makes a profit of Rs. 120, second package makes Rs.100 and third package makes Rs.270 per pack. 

How many packs should be made to maximize book fair profits?

What will the profit be?

suppose speed of vehicles on a particular stretch of roadway are normally distributed with mean 36.6 mph and standard deviation 1.7 mph. Find the probability that the mean speed of 20 randomly selected vehicles is between 35 and 40 mph on quizlet

Find the domain and range of the function without graphing. Explain how you found your answers. "y=\\frac{1}{3}\\sqrt{x }-4"

Check the convergence of the sequence defined by 𝑢𝑛+1 = 𝑎 /(1+𝑢𝑛) where 𝑎 > 0, 𝑢1 > 0.