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
seropon [69]
3 years ago
13

Consider H0: μ = 45 versus H1: μ < 45. A random sample of 25 observations produced a sample mean of 41.8. Using α = .025 and

the population is known to be normally distributed with σ = 6.
Mathematics
1 answer:
a_sh-v [17]3 years ago
5 0
Given
H0: \ \mu=45 \\  \\ H1: \ \mu\ \textless \ 45
This is a one-tailed test.

z= \frac{41.8-45}{6/ \sqrt{25} } = \frac{-3.2}{6/5} = \frac{-3.2}{1.2} =-2.6667

P(z\ \textless \ -2.6667)=0.00383

Since the p-value of the sample statistic (0.00383) is less that the significant level (0.025), we reject the null hypothesis.
You might be interested in
After 20 minutes Juan had it completed 12 questions, which is 0.7 of his assignment. Which percent of the Simons have he not com
egoroff_w [7]
To find the incompleted portion of the test, convert the decimal to a percentage by moving the decimal two places to the right. .7 as a percentage is 70%. subtract 70% from 100%, giving you 30%. Juan has not completed 30% of his test, or 5 questions.
4 0
3 years ago
you leave your house and walk for half an hour at a speed of 3 miles per hour. Then you run for 15 minuets at a speed of 7 miles
Karo-lina-s [1.5K]
DOIT HAVE TO BE SOLVED IN A SERTINT WAY
4 0
3 years ago
2/-3 divided by 2 3/4
Ilya [14]

Answer:

2/-3 ÷ 2 3/4

Convert the mixed fraction to an improper fraction

2/-3 ÷ 11/4

Change the division sign to multiplication sign ( × ) and reverse the second fraction

That's

2/-3 × 4/11

= -8/33

Hope this helps

7 0
3 years ago
What is the actual length of the living space if the length of the scale drawing is 16. 8 centimeters? Enter your answer in the
yaroslaw [1]

To solve the problem we must know about the Ratio.

<h2>What is Ratio?</h2>

A ratio shows us the number of times a number contains another number.

The length of the living space, in reality, is 21 meters.

Given to us

  • The scale is given as 2 centimeters equals 2.5 meters.

To find

  • the actual length of the living space if the length of the scale drawing is 16. 8 centimeters

<h3>Scale ratio</h3>

As it is given that 2 cm on the scale drawing is equal to 2.5 meters in real, therefore, the ratio can be written as

\dfrac{\text{Length of the scale drawing}}{\text{Length in reality}} = \dfrac{2\ cm}{2.5\ meters}

<h3>Length of the living space</h3>

Using the same scale ratio,

\dfrac{\text{Length of the living space in scale drawing}}{\text{Length of the living space in reality}} = \dfrac{2\ cm}{2.5\ meters}

\dfrac{16.8}{x} = \dfrac{2\ cm}{2.5\ meters}\\\\x=\dfrac{16.8 \times 2.5}{2} = 21\ meters

Hence, the length of the living space, in reality, is 21 meters.

Learn more about Ratio:

brainly.com/question/1504221

7 0
2 years ago
At SMS, students were encouraged to wear school colors of blue and white. 900 Students wore their school colors while 300 studen
Sergio039 [100]

Answer:

audududheyeheheh gay

7 0
3 years ago
Other questions:
  • Simplify 3x+6=18, please
    10·2 answers
  • 87 24/25 as a decimal
    15·2 answers
  • Simplify the expression 7 y + 3 x + 3 - 2y + 6
    10·1 answer
  • Please help! I will give points for helpng.
    8·2 answers
  • Triangle ABC, shown in the diagram below, is an isosceles triangle
    12·1 answer
  • Ava bought 1.7 lb of plums and 7.2 lb of peaches how many was her total. Plums:$0.23. per pound peaches:$1.22 per pound​
    12·1 answer
  • Help me plz thank you but try to put the right answer
    10·1 answer
  • A pair of sneakers costs $60. Dahlia bought them on sale
    11·2 answers
  • How to solve 4x+6y less than or equal to 120
    5·1 answer
  • Write a two-column proof.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!