Suppose that a company makes light bulbs with a mean life of 310 hours, and a standard deviation of 47 hours. 1. What would be the z-score of a light which lasts 293 hours? 2. If a light bulb had a z-score of 2.50, how many hours did it last? 3. What percentage of all light bulbs last less than 276 hours? 4. What percentage of all light bulbs last longer than 343 hours? 5. What percentage of all light bulbs last between 290 and 330 hours? 6. Suppose the company wanted to throw away all light bulbs that were in the lowest 5%. How long would a light bulb need to last in order to be thrown away? (Round to the nearest tenth of an hour.)

Q: An employee makes $26 an hour. The employee gets paid 2.5 times his normal wage for any hours (or…

A: It is given that an employee is getting $26 for an hour. (A) In a week, if 37 hours are working…

Q: What number has a remainder of 2 when divided by 3, a remainder of 3 when divided by 5 and a…

A:

Q: A bakery sells chocolate cakes that cost $12 to produce. The overhead cost to run the bakery is…

A: Given  Cost price of cake C=$12 Overhead cost V=$200 Number of chocolates sold x=100

Q: 5. Solve 38+3 – 38+2 = 1458

A:

Q: If the largest of 58 consecutive integers is 529, what is the smallest? Write your answer in the…

A: There are 58 consecutive integers. Largest number is 529. That is 58 th observation is 529.

Q: Find both solutions and multiply them together! 8x2 + 9 = 401 %23

A: Find the solution and multiply  8x2 + 9 = 401

Q: The sum of a number y and four is 13

A: Given data : The sum of a number y and four is 13.

Q: Solve each of the following equations. V3r + 3 = 3 1. 2. V² – 3 = V5r + 47

A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…

Q: Amelie works on her homework for hour before her soccer practice and hour after her soccer practice.…

A: For the fraction, pq, the numerator is p and the denominator is q. If two fractions with same…

Q: What is 3 plus 3

A:

Q: show/prove what the answer is to 0 divided by 4 is

A: show/prove what the answer is to 0 divided by 4 is.

Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.