HELP !!excuse my messy writing

Among 81678167 cases of heart pacemaker malfunctions, 457457 were found to be caused by firmware, which is software programmed

katrin2010 [14]

(Note: This seems when question was pasted from its source the in text box, the numbers were pasted twice. Solving the question considering only one occurence of number i.e using 8167 instead of 81678167. However, method will be same regardless of the numbers listed)

Part a)
Total number of cases = <span>8167
Number of Malfunctions due to firmware = </span>457<span>

Probability that a malfunction is because of firmware = </span> $\frac{457}{8167}$

Probability that the malfunction is not because of firmware = 1 - Probability that a malfunction is because of firmware = $1- \frac{457}{8167}= \frac{7710}{8167}$

Probability of selecting 3 pacemakers without a malfunction because of firmware = $( \frac{7710}{8167} )^{3} = 0.841$

Part b)
The probability of selecting 3 pacemakers without any malfunction because of firmware is 0.841, which is a high probability. So we can say, yes this procedure is very likely to result in entire batch being accepted. The probability near 1 is considered a very higher probability for an event and the probability near 0 is considered a very lower probability for an event.

6 0

3 years ago

Solve the inequality.<br> Graph the solution on a number line.

Lina20 [59]

Answer:

x greater than or equal to -3

3 0

3 years ago

5. Lines s and t intersect as shown in the picture. Which pair of angles are vertical?

Tanzania [10]

Answer: angle 7 and angle 10

Step-by-step explanation: trust me its correct

4 0

3 years ago

Describe the relationship between the area of a circle and its circumstances

valentina_108 [34]

Answer:

$A = \frac{r}{2}C$

Step-by-step explanation:

Given

Shape: Circle

Required

The area and the circumference (relationship)

This implies that, we write an expression that relates the area and the circumference.

Circumference is calculated as:

$C = 2\pi r$

Area is calculated as:

$A = \pi r^2$

The area can be rewritten as:

$A = \frac{2\pi r^2}{2}$

Further rewrite as:

$A = \frac{r}{2}*2\pi r$

Recall that: $C = 2\pi r$

So, the expression becomes

$A = \frac{r}{2}*C$

$A = \frac{r}{2}C$

6 0

3 years ago

Llana [10]

It shows that the values of the mileages are close to 24 mpg. Hence statistics refes 24 as the mean.

Mean is one of the measure of dispersion and is the avearage of a set of data.

According to the question, the magazine reports that the most common gas mileage was 24 mpg. This shows that reports have published several gas mileages for cars and truck and the average of this mileage is 24mpg

It shows that the values of the mileages are close to 24 mpg. Hence statistics refes 24 as the mean.

Learn more on mean here: brainly.com/question/14532771

#SPJ1

4 0

2 years ago