1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
AleksandrR [38]
3 years ago
13

4. Six workers are hired to weed a field by

Mathematics
1 answer:
user100 [1]3 years ago
4 0

Answer:

594 square feet

Step-by-step explanation:

Area of a rectangle is length times width. We can find the area of each workers plot by multiplying 9 and 11 to get 99 sq feet. There is six workers, and therefore six plots of land, so we'd take our 99 sq feet and count that six times to get 594 square feet.

You might be interested in
People tend to evaluate the quality of their lives relative to others around them (Frieswijk et al., 2004). In one study, resear
Alborosie

Answer:

Step-by-step explanation:

Hello!

Research.

n=9 frail elderly were interview and compared to a fictitious person who was worse off then the interviewee, a life-satisfaction score was determined for each person.

18, 23, 24, 22, 19, 27, 23, 26, 25

Assuming that the population average score is μ= 20, the researchers think that the elderly in the sample are more or less satisfied than others in the general population.

a. You have the information of one sample, assuming this sample has a normal distribution and each elderly interviewed is independent, then the t-test of choice is a one-sample t-test.

b. and c. If you say that the elderly are "more or less" satisfied than the others, this means that they are either as satisfied as to the general population or not satisfied as to the general population. Symbolically:

H₀: μ = 20

H₁: μ ≠ 20

This is a two-tailed test, meaning, you will have two critical regions.

d.  

α: 0.05

Left critical value: t_{n-1;/\alpha 2} = t_{8; 0.025}= -2.306

Right critical value: t_{n-1;1-\alpha /2} = t_{8;0.975} = 2.306

e.

t_{H_0}= \frac{X[bar]-Mu}{\frac{S}{\sqrt{n} } } ~t_{n-1}

X[bar]= 23

S= 3

t_{H_0}= \frac{23-20}{\frac{3}{\sqrt{9} } }= 3

f.

Considering that the calculated t-value is greater than the right critical value, the decision is to reject the null hypothesis, so using a significance level of 5% you can conclude that the average life-satisfaction score of the elderly is different than 20.

I hope it helps!

7 0
3 years ago
Below are the functions of y = |x| and y= |x| - 9 how are the functions related?
Liono4ka [1.6K]

sorry my brain is the size of a ant

3 0
2 years ago
A bottle of shampoo costs $4 at a store. It is on sale for 25% off, and the sales tax in 5.5%. What is the sales price of the sh
Serjik [45]

Answer:

1.22 dollars after sales tax

6 0
3 years ago
Read 2 more answers
1. An AP Statistics class starts a project to estimate the average number of hours a student at their high school sleeps per nig
Vladimir [108]

Answer:

Option E

Step-by-step explanation:

This survey will not be reliable as it is chosen for convenience; the first 120 students to arrive in school on a particular morning and this collection of individuals may not be a representative of the population. The study may become biased because it does not take into account the latecomers among the students which might have been changed the study from systematically favoring certain outcomes.

5 0
3 years ago
HELP
Shtirlitz [24]

x(x + 9-x) = 6^2

9x = 36

x = 4


Answer

c. 4

4 0
2 years ago
Other questions:
  • A punch recipe serves 24 people calls for 4 L of lemonade soda 2 pints of sherbet and 6 cup of ice how much of each ingredient w
    13·1 answer
  • Your class is going on a field trip. Twenty-four students have turned in their permission slips so far. This is 80% of the stude
    13·1 answer
  • What is the midpoint of (2,5) and (-4,10)
    8·2 answers
  • it takes four trips around the track to make a mile Jack paddled his bike around the track 24 times it took him 30 minutes how m
    6·1 answer
  • Sally has 120 inches of yarn. She bought 75 more inches. How many inches of yarn does she now have?
    12·2 answers
  • (76-x+(17+4x)(25+7x)​
    14·2 answers
  • Determine whether the equation 2x + y = 8 is linear. If so, graph the function.
    12·1 answer
  • A cereal box is an example of a
    7·1 answer
  • Find the Measure of angle O<br> (see image)<br> Only real answers, please
    11·1 answer
  • Help help help help help
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!