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castortr0y [4]
3 years ago
8

A random sample of size 16 is to be taken from a normal population having mean of 100 andvariance 4. What is the 90th percentile

of the distribution of x?
Mathematics
1 answer:
viva [34]3 years ago
3 0

Answer:  100+1.28(1/2)=100.64

Step-by-step explanation:

A random sample of size 16 is to be taken from a normal population having mean 100 and variance 4. ... The 90th percentile of the normal curve, according to the table I was provided, was equal to 1.28 standard units above the mean.

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Is -24 a solution to the equation -16+2x=-64
S_A_V [24]

Answer:

It is a solution

Step-by-step explanation:

To check and see if it is a solution, we can substitute it in

-16 +2(-24) = -64

-16 -48 = -64

-64=-64

Since this is true, it is a solution

3 0
4 years ago
In a particular class of 22 students, 18 are men. What fraction of the students in the class are men
Anika [276]

Answer:

9/11

Step-by-step explanation:

The fraction that are men are

men/total

18/22

Divide the top and bottom by 2

9/11

8 0
4 years ago
Baby born 7 lbs by 10 he was 84 lbs. Write a formula for his weight as a linear function.
Yakvenalex [24]

The formula for weight in linear function is y= 7.7x + 7

<u>Step-by-step explanation:</u>

Given that,

  • The weight of the born baby = 7 lbs
  • The weight of the baby at 10 years = 84 lbs.

To find the linear function, the rate of change of weight must be calculated.

<u>To find the rate of change of the baby's weight:</u>

The change in the weight is from 7 lbs to 84 lbs.

  • The total change = 84 - 7 =77
  • The rate of change = 77 / 10 years = 7.7

Therefore, the rate of change of weight of the baby is 7.7 lbs.

This means that, every year the weight has been increased by 7.7 lbs and in 10 years the baby gained a weight of 84 lbs.

<u>From this information, the linear function is given as :</u>

Total weight = 7.7(number of years) + born weight.

⇒ y= 7.7x + 7

where,

  • The born weight is 7 lbs.
  • y is the total weight of the baby
  • x is the number of years

5 0
3 years ago
Use the number line. Enter the integer value that point D represents.
GenaCL600 [577]

Given:

A number line from -10 to 10 with 20 tick marks.

Point D is 1 tick mark to the left of 5.

To find:

The integer value that represents point D.

Solution:

A number line from -10 to 10 with 20 tick marks. It means, each mark represents the integer values from -10 to 10.

We know that, as we move towards left on a number line the value decreases and as we move towards right the value increases.

Point D is 1 tick mark to the left of 5. It means, point D represents the integer value which is 1 less than 5.

5-1=4

Therefore, point D represents the integer 4.

4 0
3 years ago
Andy, Bob, and Chuck are dividing 4 pies: apple, cherry, lemon, and pecan. The value system of the players are as follows.
kumpel [21]

Answer:

1.3

Step-by-step explanation:

each person gets 1 1/3 of a pie

6 0
4 years ago
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