Math Answers

A bakeshop owner determines the number of boxes of pandesal that are delivered each day. Find the mean of the probability distribution shown.

The standard score of Mary in Chinese Test is 1.2 and her standard score in English Test is 0.8. In what subject did she perform better?

A new car is purchased for 23700 dollars. The value of the car depreciates at 13.5% per year. What will the value of the car be, to the nearest cent, after 10 years?

John deposit 5,000 pesos in a bank paying 12% compounded quarterly. After 4 years, John decided to close her account. How much money would she be able to get from bank? ​

test the series : infinity sigma n=1 (-1) ^n-1 sin nx/n√n for absolute and conditional convergence

In 2018, the braking distance of Toyota Camry cars on a wet surface follows a normal distribution. Its mean is 122 feet with a standard deviation of 20 feet. What is the probability that a randomly selected Toyota Camry will have a braking distance of more than 130 feet?

From a random sample of 10 pigs, fed on diet A, the increases in weight in a certain

period were 10,6,16,17,13,12,8,14,15,9 lbs. For another random sample of 12 pigs fed on

diet B, the increases in the same period were 7,12,22,15,12,14,18,8,21,23,10,17 lbs. Test

whether diets A and B differ significantly as regards their effect on increases in weight?

(t % at d. f. 20 is 2.08

1.      A student has to take 7 more courses before she can graduate. If none of the courses are prerequisites to others, how many groups of three courses can she select for the next semester?  

In a railway yard goods trains arrive that at the rate of 30 trains per day. Assuming

that the inter-arrival time follows an exponential distribution and the service time

distribution is also exponential with an average of 36 minutes, calculate the probability the yard is empty 2) the average length assuming that the line capacity of the yard is 9 trains

Let T

 be a function from R

3

→R

3

 defined by

T(x,y,z)=(x−y+2z,2x+y,−x−2y+2z)

(i)

(ii)

  Show that T is a Linear Transformation

  Find nullity of T