MATHEMATICS COLLEGE

A quality control inspector has drawn a sample of 15 light bulbs from a recent production lot. Suppose that 60% of the bulbs in the lot are defective. What is the expected value of the number of defective bulbs in the sample

Answers

Answer 1

Answer:

Step-by-step explanation:

Expected number of defective is given as :

N x P = np

Where = number of the sample drawn from the production lot

P= percentage of bulbs In The lot which are defective

N = 15

P = 60% = 0.60

So when we do the multiplication,

We have:

NP = 15x0.60

= 9

So in conclusion the expected value of defective bulbs in the sample is 9.

Related Questions

Assume f(x) = ax^2+ bx + c Which one is true? f is a parabola that opens sideways to the right. f is a parabola that opens sideways to the left. f is a parabola that opens downward. f is a parabola that opens upward.
I will really appreciate the help because i’m stuck and need this as soon as possible This problem uses the notion that to find the closest distance from a point to a line we need the perpendicular line joining them. The idea is that the plane is heading in some direction, if we treat the takeoff point as the origin (0,0), we can make an equation of a line to the destination. Then we need to take the slope of that line, find its negative reciprocal to build a perpendicular slope, and then use that new perpendicular slope and the point where the mountain is to make a NEW line. Then we find the intersection of these two lines, a system of equations, (preferably by an algebraic process like substitution or elimination) to find the time at which the plane will be closest to the mountain on its path toward its destination. the problem: You're flying from Joint Base Lewis-McChord (JBLM) to an undisclosed location 245 km south and 237 km east. Mt. Rainier is located approximately 56 km east and 40 km south of JBLM. If you are flying at a constant speed of 800km / hr how long after you depart JBLM will you be the closest to Mt. Rainier? ______minutes
Evaluate the following trigonometric expression
Polygon V has an area of 1 square unit. Jun-seo drew a scaled version of Polygon V using a scale factor of 7 and labeled it Polygon W.
Which of the following can a seismograph not show scientists?

Enter your answer in the box

____

Answers

Answer:

$\boxed{2144}$

Step-by-step explanation:

The sum can be found by adding the parts:

$\sum\limits_(n=1)^(32){(4n+1)}=4\sum\limits_(n=1)^(32){n}+\sum\limits_(n=1)^(32){1}=4\cdot(32\cdot 33)/(2)+32\n\n= 2112+32=\boxed{2144}$

The sum of numbers 1 to n is n(n+1)/2.

HELPPP PLESSEEE I NEEDIT RN TYY

Answers

Answer:

1. 12

2. 0

3. 10

4. 6

Step-by-step explanation:

What is the similarity ratio of the smaller to the larger prisms? Enter your answer as a:b

Answers

Answer:

6:9>2:3

Step-by-step explanation:

In order to do this, you just have to equalize the ratio you just need to search for the same sides, so the 6 side is similar with the 9 side on the larger, and then the 8 to the 12 and the 4 to the 6, so you just equalize any of those equal we will use the 8 and 12:

8:12

Now we just reduce it with the same:

4:6

2:3

So the ratio would be 2:3.

The similarity ratio, I believe, is 2:3.

Because the lengths are 6 and 9 (2:3), the widths are 8 and 12 (2:3), and the heights are 6 and 4 (2:3).

Determine whether the value is from a discrete or continuous data set. Area of a park is 9.5 acres Is the value from a discrete or continuous data set? Discrete Continuous O

Answers

Answer: The value is from discrete data set.

Step-by-step explanation:

Since we have given that

Discrete data set is the data set which can be measured in numbers.

Continuous data set is the data set which can take any value within an interval.

As we have mention that

Area of a park = 9.5 acres

So, it is the exact number so, it can be measured in numbers.

so, it is discrete data set.

Hence, the value is from discrete data set.

Find the perimeter of the figure.
Please consider helping!

Answers

Answer:

Perimeter is 56

Step-by-step explanation:

What is a budget?a. only a savings plan
b. a savings and spending plan
c only a spending plan

Answers

What is a budget? c only a spending plan

What is a budget?

A budget is an estimate of revenue and expenses over a period of time. It is also the process of creating a plan to spend your money. This spending plan is called a budget.

Having a budget allow one to determine in advance whether you will have enough money to do the things you need to do or would like to do.

Therefore, a budget is only a spending plan.

Learn more about budget here : brainly.com/question/6663636

Other Questions

What should be done to both sides of the equation in order to solve -5m=-40

you need to solve a system of equations. You decide to use the elimination method. Which of these is not allowed? 2x-3y=12 and -2x+y=8

Find the missing value for each of the following 3 questions 1. 5% of 60 is _____2. 40% of 500 is _____3. 75% of 60 is ______

Dacă aș avea 4 ouă Un hoț îmi dă 3 ouă Cocoșul meu de fermă depune 5 ouăCâte ouă am?