Which one of the following fractions is equivalent to 1/2? a. 2/4 b. 1/8 c. 1/4 d. 2/8

How do u find ratios for a ratio

poizon [28]

Answer:

you simplify it? I dont really know. :/

Step-by-step explanation:

4 0

3 years ago

The mean incubation time for a type of fertilized egg kept at 100.2100.2âÂ°f is 2323 days. suppose that the incubation times are

zlopas [31]

To solve this problem, what we have to do is to calculate for the z scores of each condition then find the probability using the standard normal probability tables for z.

The formula for z score is:

z = (x – u) / s

where,

x = sample value

u = sample mean = 23 days

s = standard deviation = 1 day

A. P when x < 21 days

z = (21 – 23) / 1

z = -2

Using the table,

P = 0.0228

Therefore there is a 2.28% probability that the hatching period is less than 21 days.

B. P when 23 ≥ x ≥ 22

P (z=-1) = 0.1587

z (x=23) = (23 – 23) / 1 = 0

P (z=0) = 0.5

P = 0.5 - 0.1587 = 0.3413

Therefore there is a 34.13% probability that the hatching period is between 22 and 23 days.

C. P when x > 25

z = (25 – 23) / 1

z = 2

P = 0.9772

This is not yet the answer since this probability refers to the left of z. Therefore the correct probability is:

P true = 1 – 0.9772

P true = 0.0228

<span>Therefore there is a 2.28% probability that the hatching period is more than 25 days.</span>

8 0

3 years ago

What is the product of 2.2 + 0.3d- 4

Novosadov [1.4K]

Hey there!

Firstly, you need combine your like terms

$\bold{2.2AND-4}$
$\bold{0.3d}$ stays the SAME
$\bold{2.2-4=-1.8}$
$\bold{0.3d+(-1.8)}$
Combine the negative and the plus and make a negative symbol
$\boxed{\boxed{\bold{Answer:0.3d-1.8}}}$

Good luck on your assignment and enjoy your day!

~ $\bold{LoveYourselfFirst:)}$

3 0

4 years ago

Read 2 more answers

What is the mean, median, and standard deviation for the following set of scores: 24, 20, 16, 18, 18, 26, 22? Please show your w

MissTica

Answer:

first: Definitions

mean: the average or the most common value in a collection of numbers

(So u add all numbers and then divide the answer by how much numbers there were)

median: Is middle value.

(example: 4, 5, 6) (The median will be the middle which is 5) (But if there are even amount of numbers like this: 4, 5, 6, 7) (Then you will get the two middle numbers which in this case are 5 and 6 you add them and then divide by 2.)

standard deviation: measures the spread of the data about the mean value

Step-by-step explanation:

Now lets get to problem!

we have numbers:

24, 20, 16, 18, 18, 26, 22

the mean will be: 144 (remember now you have to divide by 7 because there are 7 numbers.)

So it would be 20.57

Now the median:

(Since there are 7 numbers you just find the number in the middle and that would be ur median.)

24, 20, 16, 18, 18, 26, 22

median answer: 18

Like we said: The sample standard deviation measures the spread of a data distribution of the sample. It is usually used to estimate the population standard deviation

So the standard deviation will be: 3.6

I hope this helps :)

6 0

3 years ago

How many weeks is 18 days?

MrRissso [65]

Answer:

Step-by-step explanation:

18/7=2.57

8 0

4 years ago

Read 2 more answers