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
Dmitry_Shevchenko [17]
2 years ago
5

Faced with rising fax costs, a firm issued a guideline that transmissions of 10 pages or more should be sent by 2-day mail inste

ad. Exceptions are allowed, but they want the average to be 10 or below. The firm examined 35 randomly chosen fax transmissions during the next year, yielding a sample mean of 14.44 with a standard deviation of 4.45 pages. (a) At the .01 level of significance, is the true mean greater than 10? (b) Use Excel to find the right-tail p-value.
Mathematics
1 answer:
Volgvan2 years ago
8 0

Answer:

a) The calculated value   t =  5.903 > 2.572 at 0.01 level of significance

Null hypothesis is rejected at 0.01 level of significance

There is a true mean value is less than 10

b) p - value  0.00001

The p - value 0.00001  < 0.01

The result is significant at p<0.01

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given mean of the population = 10

Sample size 'n'= 35

Mean of the sample x⁻ = 14.44

Standard deviation of the sample 's' = 4.45

Level of significance ∝ = 0.01

<u><em>Step(ii)</em></u>:-

<em>Null Hypothesis H₀</em> : μ >10

<em>Alternative Hypothesis</em> : H₁ : μ < 10

Test statistic

                 t = \frac{x^{-} -mean}{\frac{S}{\sqrt{n} } }

                t = \frac{14.44-10}{\frac{4.45}{\sqrt{35} } }

               t =  5.903

Degrees of freedom = n-1 = 35-1 = 34

tabulated value t₀.₀₁,₃₄  = 2.572

The calculated value   t =  5.903 > 2.572 at 0.01 level of significance

Null hypothesis is rejected at 0.01 level of significance

There is a true mean value is less than 10

<u><em>p- value</em></u> :

p - value  0.00001

The p - value 0.00001  < 0.01

The result is significant at p<0.01

You might be interested in
A farmer picked 1,060 blueberries equally from 5 rows of plants. How many blueberries did he pick from each row?
Nataly_w [17]
1,060 ÷ 5 = 212. He picked 212 blueberries from each row
6 0
2 years ago
Attachment need help asap
Diano4ka-milaya [45]

Answer:

c because the x value is equal to the y value

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
The slope of the line below is -2. Use the coordinates of the labeled point to find the point-slope equation of the line. (4, -6
r-ruslan [8.4K]

<u>Answer:</u>

The point-slope equation of the line is y = -2x +2 or 2x+y = 2

<u>Solution: </u>

Let us assume that the slope is m and the y intercept of the line is b

Hence, y=m x+b--------- (i)

y intercept means we need to find the value of y when x is 0

Here the line passes through point (4,-6) and slope m = (-2)

Now putting the point (4,-6) in equation (i) we get,

\Rightarrow-6 = m\times4 +b

\Rightarrow-6 = (-2)\times4 +b

\Rightarrow-6 = -8 +b

\Rightarrow-6+8 =b

\Rightarrow b = 2

So, the equation of the line will be will be y = -2x +2 or 2x+y = 2

6 0
2 years ago
Greg's home is 1.8 miles from his school.
stiv31 [10]

Answer:

a. 0.9 miles

b. 0.54 miles

c. 1.44 miles

Step-by-step explanation:

4 0
2 years ago
What is the sum d and f
ella [17]
The sum of d anf f can be expressed as:
'd+f' in mathematical terms.
4 0
2 years ago
Other questions:
  • Starting in the year 2012, the number of speeding tickets issued each year in Middletown is predicted to grow according to an ex
    12·1 answer
  • Lines
    15·1 answer
  • Plz help... geometry volume, density
    10·1 answer
  • Can someone please answer. There is a picture. There is only one problem. Thank you so much!!!
    7·1 answer
  • Select the correct answer.
    11·2 answers
  • It costs $26 to join Gym X, plus an additional $33 per month. It
    13·1 answer
  • There are several different methods for finding the slope of a line depending on the information given. In your own words, pleas
    15·1 answer
  • The vertex form of the equation of a parabola is y = 2(x+ 4)2 - 21.
    11·1 answer
  • a cost of a pen is unknown the cost of the notebook is 30 cents more than the pen mary brought 8 pens and 5 notebooks and spend
    5·1 answer
  • Geometry I need help ASAP please
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!