Question

Помогите пожалуйста. 2 номер проверили 600 деталей и у 35 из них обнаружели брак .На вероятностной шкале отметьте вероятность появления бракованых деталей 3 номер вероятность всхожести семян моркови составляет 0.96. сколько предполагается пророших семян моркови если высажено 300? 4 номер в школе 180 учащихся ивестно что за неделю было 10 опозданий к первому уроку случайным образом выбрали одного ученика какова вероятность того что у не го не было опозданий? 5 случайным образом выбирают два последовательных натуральных числа меньше 11 какова вероятность события сума выбранных чисел равна 20?

Answer 1

Объяснение:

2.

$P(A)=\frac{35}{600}\approx0,058.$

3.

300*0,96=288 (проросших семян).

4.

Число учащихся, которые не опаздали на первый урок равно:

180-10=170 (учащихся).      ⇒

$P(A)=\frac{170}{180}\approx0, 94.$

5.

Максимальная сумма двух последовательных натуральных чисел равна: 9+10=19<20.     ⇒

$P(A)=0.$

Answer 2

Probability of Defective Parts

To determine the probability of defective parts, we need to calculate the ratio of defective parts to the total number of parts inspected. In this case, 35 out of 600 parts were found to be defective.

The probability of a part being defective can be calculated as follows:

Probability of Defective Part = Number of Defective Parts / Total Number of Inspected Parts

Using the given information, we can calculate the probability of defective parts as follows:

Probability of Defective Parts = 35 / 600

Let's calculate this probability:

Probability of Defective Parts = 0.0583

Therefore, the probability of a part being defective is approximately 0.0583 or 5.83% [[1]].

Probability of Germination of Carrot Seeds

The probability of germination of carrot seeds is given as 0.96. To find the expected number of germinated seeds out of 300 planted seeds, we can multiply the probability of germination by the total number of seeds planted.

Expected Number of Germinated Seeds = Probability of Germination * Total Number of Seeds Planted

Using the given information, we can calculate the expected number of germinated seeds as follows:

Expected Number of Germinated Seeds = 0.96 * 300

Let's calculate this:

Expected Number of Germinated Seeds = 288

Therefore, if 300 carrot seeds are planted, it is expected that approximately 288 seeds will germinate [[2]].

Probability of No Tardiness

To calculate the probability that a randomly chosen student had no tardiness out of 180 students, we need to consider that there were 10 instances of tardiness during the week.

The probability of a student having no tardiness can be calculated as follows:

Probability of No Tardiness = (Total Number of Students - Number of Tardy Students) / Total Number of Students

Using the given information, we can calculate the probability of no tardiness as follows:

Probability of No Tardiness = (180 - 10) / 180

Let's calculate this probability:

Probability of No Tardiness = 170 / 180

Probability of No Tardiness = 0.9444

Therefore, the probability that a randomly chosen student had no tardiness is approximately 0.9444 or 94.44% [[3]].

Probability of Sum of Two Numbers

To calculate the probability that the sum of two randomly chosen natural numbers less than 11 is equal to 20, we need to determine the number of favorable outcomes and the total number of possible outcomes.

The favorable outcomes are the pairs of numbers that sum up to 20. From the given conditions, we can see that there is only one favorable outcome: (10, 10).

The total number of possible outcomes is the number of pairs of natural numbers less than 11. Since there are 10 natural numbers less than 11, the total number of possible outcomes is 10 * 10 = 100.

Therefore, the probability of the sum of two numbers being equal to 20 is:

Probability = Number of Favorable Outcomes / Total Number of Possible Outcomes

Using the given information, we can calculate the probability as follows:

Probability = 1 / 100

Therefore, the probability of the sum of two randomly chosen natural numbers less than 11 being equal to 20 is 0.01 or 1% [[4]].

I hope this helps! Let me know if you have any further questions.