Ask question

Ask question

All categories

4 years ago

7

if a sample of 25 students is taken from a population of 179 students the population variance o^2, is the variance of how many s

tudents' heights

1 answer:

Rama09 [41]4 years ago

6 0

Answer: 179

Step-by-step explanation:

You might be interested in

A company has two types of machines, type R and type S. Operating at a constant rate, a machine of type R does a certain job in

SashulF [63]

Answer:

The number of machines to complete job in 2 hours is 6.

Step-by-step explanation:

Using the relation of the rate of each one machine and knowing that adding up both rates.

$Rate R +Rate S= Rate total$

Rate R = $\frac{x}{36}$ 'x' is the job

Rate S = $\frac{x}{18}$ 'x' is the job

So, using the equation of rates

$Rate total =\frac{x}{36} + \frac{x}{18}$

Rate total is going to be a job in 2 hours so = $\frac{1}{2}$

$\frac{1}{2} = \frac{x}{36}+\frac{x}{18}$ <em>adding up</em>

$\frac{1}{2}= x*\frac{3}{36}$ <em>factoring the x</em>

$\frac{1}{2}= x*\frac{1}{12}$ <em>simplifying</em>

x= $\frac{12}{2} \\$

x= 6

3 0

3 years ago

To pry the lid off a paint can, you apply a force of50 N to the handle of the screwdriver. What is the mechanical advantage of t

olga2289 [7]

Answer:

just dont try it

Step-by-step explanation:

buy a paint opener

3 0

3 years ago

Read 2 more answers

Which expressions are all equivalent to 3 1/4 - (-5/8 )?

shutvik [7]

Answer:

13/4 + 5/8

Step-by-step explanation:

Change the mixed number into a fraction and change the integer of -(-) to equal + because two negatives equal a positive

6 0

3 years ago

alexandr1967 [171]

Answer:

189

Step-by-step explanation:

-7 times -9 would give 56 and then multiplied by 3 gives 189.

7 0

3 years ago

Read 2 more answers

a farme planted 38 rows of green beans with 17 plants in each row how many green bean plants did the farme grow

s344n2d4d5 [400]

38×17=..............

8 0

4 years ago

Read 2 more answers